diff --git a/hayamiki_generator.1.19.aproj b/hayamiki_generator.1.19.aproj
index d5d27ba..b1d1e51 100644
--- a/hayamiki_generator.1.19.aproj
+++ b/hayamiki_generator.1.19.aproj
@@ -430,6 +430,8 @@
     <Compile Include="library\widgets4\window_test.anubis" />
     <Compile Include="library\xml\basic_xml_parser.anubis" />
     <Compile Include="library\xml\xml_parser.apg.anubis" />
+    <Compile Include="src\app\app_loggers.anubis" />
+    <Compile Include="src\app\app_version.anubis" />
     <Compile Include="src\check.anubis" />
     <Compile Include="src\generation\choices_selector.anubis" />
     <Compile Include="src\generation\columns.anubis" />
diff --git a/src/app/app_version.anubis b/src/app/app_version.anubis
new file mode 100644
index 0000000..810a043
--- /dev/null
+++ b/src/app/app_version.anubis
@@ -0,0 +1,19 @@
+/*
+ * Created by PyramIDE.
+ * User: フランスのトトロ aka (David RENÉ) 
+ * Date: 22/08/2022
+ * Time: 08:58
+ * © David RENÉ
+ */
+
+read tools/basis.anubis
+read system/string.anubis
+
+public define Int major    = 1.
+public define Int minor    = 19.
+public define Int release  = 3.
+public define Int build    = 0.
+public define String status  = "".
+
+public define String product_version                = major+"."+minor+"."+release+"."+build+" "+status.
+public define String product_numerical_version      = major+"."+minor+"."+release+"."+build.
diff --git a/src/generation/files.anubis b/src/generation/files.anubis
index 01561cb..2e5dc95 100644
--- a/src/generation/files.anubis
+++ b/src/generation/files.anubis
@@ -16,6 +16,9 @@ read hayamiki_lib/hk_generator.anubis
 read tools/basis.anubis
 read tools/streams.anubis
 read tools/ISO-8601.anubis
+
+read app/app_version.anubis
+
 read generation/header.anubis
 read generation/types.anubis
 read generation/densaku.anubis
@@ -264,11 +267,14 @@ define Maybe(One)
   with db_SHA1 = readString(ini, "DB_MODEL", "SHA1", "N/A"),
   with version = readString(ini, "DB_MODEL", "Version", "0.0.0.0"),
   with app_name= readString(ini, "DB_MODEL", "app_name", ""),
+  with engine  = readString(ini, "DB_MODEL", "engine", "sqlite3"),
+  with hkg_version = readString(ini, "HK_GENERATOR", "Generator_version", ""),
+  
   println("Saved DB model SHA1 = "+db_SHA1);
-  with current_db_SHA1 = to_ascii(sha1(serialize(db))),
+  with current_db_SHA1 = to_ascii(sha1(serialize(db)+to_byte_array(version))),
   println("Current DB model SHA1 = "+current_db_SHA1);
   
-  if db_SHA1 = current_db_SHA1 then
+  if db_SHA1 = current_db_SHA1 & hkg_version = product_numerical_version then
     success(println("Model already generated, nothing to do"))
   else if check_database(db) is 
   {
@@ -285,7 +291,9 @@ define Maybe(One)
       if generate_hk_menus(apps, destination_dir) is failure then println("failure");failure else
       if generate_cxm_lib_menus(apps, destination_dir) is failure then println("failure");failure else
         writeString(ini, "DB_MODEL", "SHA1", current_db_SHA1);
-        writeString(ini, "DB_MODEL", "Version", version);        
+        writeString(ini, "DB_MODEL", "Version", version);
+        writeString(ini, "HK_GENERATOR", "Generator_version", product_numerical_version);
+        writeString(ini, "HK_GENERATOR", "generation_datetime",_Int_to_ISO_8601_datetime(now));
         writeIniInfo(ini);
         sleep(3000);
         success(unique)
--
libgit2 0.21.4