diff --git a/ocaml/Input_full_ci.ml b/ocaml/Input_full_ci.ml
deleted file mode 100644
index f963ee7e..00000000
--- a/ocaml/Input_full_ci.ml
+++ /dev/null
@@ -1,153 +0,0 @@
-open Qptypes;;
-open Qputils;;
-open Core.Std;;
-
-module Full_ci : sig
-  type t =  
-    { n_det_max_fci      : Det_number_max.t;
-      pt2_max            : PT2_energy.t;
-      do_pt2_end         : bool;
-      var_pt2_ratio      : Normalized_float.t;
-    } with sexp
-  ;;
-  val read  : unit -> t option
-  val write : t-> unit
-  val to_string : t -> string
-  val to_rst : t -> Rst_string.t
-  val of_rst : Rst_string.t -> t option
-end = struct
-  type t = 
-    { n_det_max_fci      : Det_number_max.t;
-      pt2_max            : PT2_energy.t;
-      do_pt2_end         : bool;
-      var_pt2_ratio      : Normalized_float.t;
-    } with sexp
-  ;;
-
-  let get_default = Qpackage.get_ezfio_default "full_ci";;
-
-  let read_n_det_max_fci () = 
-    if not (Ezfio.has_full_ci_n_det_max_fci ()) then
-       get_default "n_det_max_fci"
-       |> Int.of_string
-       |> Ezfio.set_full_ci_n_det_max_fci
-    ;
-    Ezfio.get_full_ci_n_det_max_fci ()
-    |> Det_number_max.of_int
-  ;;
-
-  let write_n_det_max_fci ndet = 
-    Det_number_max.to_int ndet
-    |> Ezfio.set_full_ci_n_det_max_fci
-  ;;
-
-  let read_var_pt2_ratio () =
-    if not (Ezfio.has_full_ci_var_pt2_ratio ()) then
-       get_default "var_pt2_ratio"
-       |> Float.of_string
-       |> Ezfio.set_full_ci_var_pt2_ratio
-    ;
-    Ezfio.get_full_ci_var_pt2_ratio ()
-    |> Normalized_float.of_float
-  ;;
-
-  let write_var_pt2_ratio ratio =
-    Normalized_float.to_float ratio
-    |> Ezfio.set_full_ci_var_pt2_ratio
-  ;;
-
-  let read_pt2_max () = 
-    if not (Ezfio.has_full_ci_pt2_max ()) then
-       get_default "pt2_max"
-       |> Float.of_string
-       |> Ezfio.set_full_ci_pt2_max
-    ;
-    Ezfio.get_full_ci_pt2_max ()
-    |> PT2_energy.of_float
-  ;;
-
-  let write_pt2_max pt2_max = 
-    PT2_energy.to_float pt2_max
-    |> Ezfio.set_full_ci_pt2_max
-  ;;
-
-  let read_do_pt2_end () = 
-    if not (Ezfio.has_full_ci_do_pt2_end ()) then
-       get_default "do_pt2_end"
-       |> Bool.of_string
-       |> Ezfio.set_full_ci_do_pt2_end
-    ;
-    Ezfio.get_full_ci_do_pt2_end ()
-  ;;
-
-  let write_do_pt2_end =
-    Ezfio.set_full_ci_do_pt2_end
-  ;;
-
-
-  let read () = 
-    Some
-    { n_det_max_fci = read_n_det_max_fci ();
-      pt2_max       = read_pt2_max ();
-      do_pt2_end    = read_do_pt2_end ();
-      var_pt2_ratio = read_var_pt2_ratio ();
-    }
-  ;;
-
-
-  let write { n_det_max_fci ;
-              pt2_max       ;
-              do_pt2_end    ;
-              var_pt2_ratio ;
-            } = 
-     write_n_det_max_fci n_det_max_fci;
-     write_pt2_max       pt2_max;
-     write_do_pt2_end    do_pt2_end;
-     write_var_pt2_ratio var_pt2_ratio;
-  ;;
-
-  let to_string b =
-    Printf.sprintf "
-n_det_max_fci = %s
-pt2_max = %s
-do_pt2_end = %s
-var_pt2_ratio = %s
-"
-        (Det_number_max.to_string b.n_det_max_fci)
-        (PT2_energy.to_string b.pt2_max)
-        (Bool.to_string b.do_pt2_end)
-        (Normalized_float.to_string b.var_pt2_ratio)
-    ;;
-
-  let to_rst b =
-    Printf.sprintf "
-Stop when the `n_det` > `n_det_max_fci` ::
-
-  n_det_max_fci = %s
-
-Stop when -E(PT2) < `pt2_max` ::
-
-  pt2_max = %s
-
-Compute E(PT2) at the end ::
-
-  do_pt2_end = %s
-
-Target energy ratio variational/(variational+PT2) ::
-
-  var_pt2_ratio = %s
-"
-        (Det_number_max.to_string b.n_det_max_fci)
-        (PT2_energy.to_string b.pt2_max)
-        (Bool.to_string b.do_pt2_end)
-        (Normalized_float.to_string b.var_pt2_ratio)
-    |> Rst_string.of_string
-    ;;
-
-  include Generic_input_of_rst;;
-  let of_rst = of_rst t_of_sexp;;
-
-
-end
-
-
diff --git a/scripts/ezfio_interface/ei_handler.py b/scripts/ezfio_interface/ei_handler.py
index 7b631721..3396e6db 100755
--- a/scripts/ezfio_interface/ei_handler.py
+++ b/scripts/ezfio_interface/ei_handler.py
@@ -414,7 +414,11 @@ def save_ezfio_config(module_lower, str_ezfio_config):
             f.write(str_ezfio_config)
 
 
-def create_ocaml_check(dict_ezfio_cfg):
+def create_ocaml_input(dict_ezfio_cfg):
+
+    l_provider = [k for k, v in dict_ezfio_cfg.iteritems() if 'default' in v]
+    l_type = [v["type"] for k, v in dict_ezfio_cfg.iteritems() if 'default' in v]
+    l_doc = [v["doc"] for k, v in dict_ezfio_cfg.iteritems() if 'default' in v]
 
     # ~#~#~#~#~#~#~#~# #
     #  C r e a t i o n #
@@ -422,8 +426,42 @@ def create_ocaml_check(dict_ezfio_cfg):
 
     from ezfio_generate_ocaml import EZFIO_ocaml
 
+    template = ['(* =~=~ *)',
+                '(* Init *)',
+                '(* =~=~ *)',
+                ""]
+
+    template += ["open Qptypes;;",
+                 "open Qputils;;",
+                 "open Core.Std;;",
+                 "",
+                 "module Full_ci : sig"]
+
+    template += [EZFIO_ocaml.create_type(l_provider, l_type)]
+
+    template += ["  val read  : unit -> t option",
+                 "  val write : t-> unit",
+                 "  val to_string : t -> string",
+                 "  val to_rst : t -> Rst_string.t",
+                 "  val of_rst : Rst_string.t -> t option",
+                 "end = struct"]
+
+    template += [EZFIO_ocaml.create_type(l_provider, l_type)]
+
+    template += ['',
+                 '  let get_default = Qpackage.get_ezfio_default "full_ci";;',
+                 '']
+
+    template += ['(* =~=~=~=~=~=~==~=~=~=~=~=~ *)',
+                 '(* Generate Special Function *)',
+                 '(* =~=~=~==~=~~=~=~=~=~=~=~=~ *)',
+                 ""]
+
     for provider_name, d_val in sorted(dict_ezfio_cfg.iteritems()):
 
+        if 'default' not in d_val:
+            continue
+
         ezfio_dir = d_val["ezfio_dir"]
         ezfio_name = d_val["ezfio_name"]
 
@@ -433,10 +471,48 @@ def create_ocaml_check(dict_ezfio_cfg):
 
         e = EZFIO_ocaml(**d)
 
-        template = e.create_read()
+        template += [e.create_read(),
+                     e.create_write(),
+                     ""]
 
-        print template
+    template += ['(* =~=~=~=~=~=~=~=~=~=~=~=~ *)',
+                 '(* Generate Global Function *)',
+                 '(* =~=~=~=~=~=~=~=~=~=~=~=~ *)',
+                 ""]
 
+    template += [EZFIO_ocaml.create_read_global(l_provider),
+                 EZFIO_ocaml.create_write_global(l_provider),
+                 EZFIO_ocaml.create_to_string(l_provider, l_type),
+                 EZFIO_ocaml.create_to_rst(l_provider, l_type, l_doc)]
+
+    template += ["  include Generic_input_of_rst;;",
+                 "  let of_rst = of_rst t_of_sexp;;",
+                 "",
+                 "end"]
+
+    return "\n".join(template)
+
+
+def save_ocaml_input(module_lower, str_ocaml_input):
+    """
+    Write the str_ocaml_input in
+    $QPACKAGE_ROOT/ocaml/Input_{0}.ml".format(module_lower)
+    """
+
+    path = "{0}/ocaml/Input_{1}.ml".format(os.environ['QPACKAGE_ROOT'],
+                                           module_lower)
+
+    try:
+        f = open(path, "r")
+    except IOError:
+        old_output = ""
+    else:
+        old_output = f.read()
+        f.close()
+
+    if str_ocaml_input != old_output:
+        with open(path, "w") as f:
+            f.write(str_ocaml_input)
 
 def main():
     """
@@ -480,7 +556,8 @@ def main():
     #  O c a m l #
     # ~#~#~#~#~#~#
 
-    _ = create_ocaml_check(dict_ezfio_cfg)
+    str_ocaml_input = create_ocaml_input(dict_ezfio_cfg)
+    save_ocaml_input(module_lower, str_ocaml_input)
 
     # ~#~#~#~#~#~#~#~#
     #  I R P . f 9 0 #
diff --git a/scripts/ezfio_interface/ezfio_generate_ocaml.py b/scripts/ezfio_interface/ezfio_generate_ocaml.py
index bbed9685..fc71ddbe 100755
--- a/scripts/ezfio_interface/ezfio_generate_ocaml.py
+++ b/scripts/ezfio_interface/ezfio_generate_ocaml.py
@@ -17,13 +17,17 @@ class EZFIO_ocaml(object):
     def Ocaml_type(self):
         return self.type.ocaml.capitalize()
 
+    @property
+    def ocaml_type(self):
+        return self.type.ocaml
+
     @property
     def fancy_type(self):
         return self.type.fancy
 
     def create_read(self):
         '''
-        Take an imput a list of keyword argument
+        You need to instantiate the EZFIO_ocaml with this keyword argument
         ezfio_dir  = str
         ezfio_name = str
         type       = Named_tuple(fancy_type, ocaml_type, fortrant_type)
@@ -42,19 +46,20 @@ class EZFIO_ocaml(object):
         # C r e a t e _ t e m pl a t e #
         # ~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
 
-        l_template = ['(* Read snippet for {self.ezfio_name} *)',
-                      'let read_{self.ezfio_name} () =',
-                      '  if not (Ezfio.has_{self.ezfio_dir}_{self.ezfio_name} ()) then',
-                      '     get_default "{self.ezfio_name}"',
-                      '     |> {self.Ocaml_type}.of_string',
-                      '     |> Ezfio.set_{self.ezfio_dir}_{self.ezfio_name}',
-                      '  ;',
-                      '  Ezfio.get_{self.ezfio_dir}_{self.ezfio_name} ()']
+        l_template = [
+            '(* Read snippet for {self.ezfio_name} *)',
+            'let read_{self.ezfio_name} () =',
+            '  if not (Ezfio.has_{self.ezfio_dir}_{self.ezfio_name} ()) then',
+            '     get_default "{self.ezfio_name}"',
+            '     |> {self.Ocaml_type}.of_string',
+            '     |> Ezfio.set_{self.ezfio_dir}_{self.ezfio_name}',
+            '  ;',
+            '  Ezfio.get_{self.ezfio_dir}_{self.ezfio_name} ()']
 
         if self.fancy_type:
-                l_template += ["    |> {self.fancy_type}.of_{self.Ocaml_type}"]
+            l_template += ["    |> {self.fancy_type}.of_{self.ocaml_type}"]
 
-        l_template += [";;;"]
+        l_template += [";;"]
 
         template = "\n  ".join(l_template)
 
@@ -70,4 +75,158 @@ class EZFIO_ocaml(object):
         return template_rendered
 
     def create_write(self):
-        pass
+        '''
+        You need to instantiate the EZFIO_ocaml with this keyword argument
+        ezfio_dir  = str
+        ezfio_name = str
+        type       = Named_tuple(fancy_type, ocaml_type, fortrant_type)
+
+        Return the read template
+        '''
+
+        for i in ["ezfio_dir", "ezfio_name", "type"]:
+            try:
+                "exec self.{0}".format(i)
+            except NameError:
+                msg = "You need to provide a '{0}' for creating read function"
+                raise KeyError(msg.format(i))
+
+        # ~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
+        # C r e a t e _ t e m pl a t e #
+        # ~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
+
+        l_template = ['(* Write snippet for {self.ezfio_name} *)']
+
+        if self.fancy_type:
+            l_template += ['let write_{self.ezfio_name} var = ',
+                           '  {self.fancy_type}.to_{self.ocaml_type} var',
+                           '  |> Ezfio.set_{self.ezfio_dir}_{self.ezfio_name}']
+        else:
+            l_template += ['let write_{self.ezfio_name} =',
+                           '   Ezfio.set_{self.ezfio_dir}_{self.ezfio_name}']
+
+        l_template += [';;']
+
+        template = "\n  ".join(l_template)
+
+        # ~#~#~#~#~#~ #
+        # R e n d e r #
+        # ~#~#~#~#~#~ #
+
+        template_rendered = template.format(**locals())
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return template_rendered
+
+    @staticmethod
+    def create_type(l_provider, l_type):
+
+        l_template = ["(* Generate type *)",
+                      "type t = ",
+                      "  {"]
+
+        for p, t in zip(l_provider, l_type):
+
+            if t.fancy:
+                l_template += ["    {0:<30} : {1}.t;".format(p, t.fancy)]
+            else:
+                l_template += ["    {0:<30} : {1};".format(p, t.ocaml)]
+        l_template += ["  } with sexp",
+                       ";;"]
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return "\n   ".join(l_template)
+
+    @staticmethod
+    def create_read_global(l_provider):
+
+        l_template = ["(* Read all *)",
+                      "let read() = ",
+                      "  Some",
+                      "  {"]
+        l_template += ["    {0:<30} = read_{0} ();".format(p) for p in l_provider]
+
+        l_template += ["  }",
+                       ";;"]
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return "\n   ".join(l_template)
+
+    @staticmethod
+    def create_write_global(l_provider):
+
+        l_template =  ["(* Write all *)",
+                       "let write{ "]
+        l_template += ["           {0};".format(p) for p in l_provider]
+        l_template += ["         } ="]
+        l_template += ["  write_{0:<30} {0};".format(p) for p in l_provider]
+        l_template += [";;"]
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return "\n   ".join(l_template)
+
+    @staticmethod
+    def create_to_string(l_provider, l_type):
+
+        l_template = ['(* to_string*)',
+                      'let to_string b =',
+                      '  Printf.sprintf "']
+
+        l_template += ["{0} = %s".format(p) for p in l_provider] 
+        l_template += ['"']
+
+        for p, t in zip(l_provider, l_type):
+
+            if t.fancy:
+                str_ = t.fancy
+            else:
+                str_ = t.ocaml.capitalize()
+
+            l_template += ["    ({0}.to_string b.{1})".format(str_, p)]
+
+        l_template += [";;"]
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return "\n   ".join(l_template)
+
+    @staticmethod
+    def create_to_rst(l_provider, l_type, l_doc):
+
+        l_template = ['(* to_rst*)',
+                      'let to_rst b =',
+                      '  Printf.sprintf "']
+
+        for p, d in zip(l_provider, l_doc):
+
+            l_template += ["{0} ::".format(d),
+                           "",
+                           "  {0} = %s".format(p),
+                           ""]
+        l_template += ['"']
+
+        for p, t in zip(l_provider, l_type):
+
+            if t.fancy:
+                str_ = t.fancy
+            else:
+                str_ = t.ocaml.capitalize()
+
+            l_template += ["    ({0}.to_string b.{1})".format(str_, p)]
+
+        l_template += ["|> Rst_string.of_string",
+                       ";;"]
+
+        # ~#~#~#~#~#~ #
+        # R e t u r n #
+        # ~#~#~#~#~#~ #
+        return "\n   ".join(l_template)
diff --git a/src/Full_CI/EZFIO.cfg b/src/Full_CI/EZFIO.cfg
index 8146ff81..1f701ad8 100644
--- a/src/Full_CI/EZFIO.cfg
+++ b/src/Full_CI/EZFIO.cfg
@@ -18,8 +18,8 @@ default: true
 
 [PT2_max]
 type: PT2_energy
-doc: The selection process stops when the largest PT2 (for all the state is lower
-     than pt2_max in absolute value)
+doc: The selection process stops when the largest PT2 (for all the state) is lower
+     than pt2_max in absolute value
 interface: output
 default: 0.0001