diff --git a/src/include/about.cpp b/src/include/about.cpp
index 82b2756b8..5ec21b5cb 100755
--- a/src/include/about.cpp
+++ b/src/include/about.cpp
@@ -555,6 +555,7 @@ TInfo_mask::TInfo_mask() : TProperty_sheet(TR("Informazioni"))
   add_prop(TR("Libreria GUI"), strwx);
   add_prop(TR("Libreria PDF"), printer);
   add_prop(TR("Libreria SQL"), strsql);
+	add_prop(TR("Libreria Matematica"), "GreenLeaf Library");
 
 #ifdef _MSC_VER
   const int cver = _MSC_VER / 100 - 6;
diff --git a/src/include/sqlfilerset.cpp b/src/include/sqlfilerset.cpp
new file mode 100644
index 000000000..f72a21f9b
--- /dev/null
+++ b/src/include/sqlfilerset.cpp
@@ -0,0 +1,232 @@
+#include <sqlfilerset.h>
+#include <config.h>
+
+/////////////////////////////////////////////////////////////////////////////////////
+// TSQLite_autoset
+/////////////////////////////////////////////////////////////////////////////////////
+
+// Imposta il valore di un campo variant
+void TSQLite_autoset::set(const char* fld, const TVariant& var)
+{
+  CHECK(fld && *fld, "Null field name");
+
+  if (var.is_null())
+  {
+    _fields.remove(fld);
+  }
+  else
+  {
+    TVariant* obj = (TVariant*)_fields.objptr(fld);
+    if (obj != NULL)
+      *obj = var;
+    else
+      _fields.add(fld, new TVariant(var));
+  }
+}
+
+// Imposta il valore di un campo intero
+void TSQLite_autoset::set(const char* fld, long val)
+{
+  const TVariant var(val);
+  set(fld, var);
+}
+
+// Imposta il valore di un campo stringa
+void TSQLite_autoset::set(const char* fld, const char* val)
+{
+  if (val == NULL)
+    set(fld, NULL_VARIANT);
+  else
+  {
+    const TVariant var(val);
+    set(fld, var);
+  }
+}
+
+// Imposta il valore di un campo stringa
+void TSQLite_autoset::set(const char* fld, const TString& val)
+{
+  const TVariant var(val);
+  set(fld, var);
+}
+
+// Imposta il valore di un campo numerico
+void TSQLite_autoset::set(const char* fld, const real& val)
+{
+  const TVariant var(val);
+  set(fld, var);
+}
+
+// Imposta il valore di un campo data in formato ISO
+void TSQLite_autoset::set(const char* fld, const TDate& val)
+{
+  if (val.ok())
+  {
+    const TVariant var(val);
+    set(fld, var);
+  }
+  else
+    set(fld, "");
+}
+
+// Imposta il valore di un campo booleano
+void TSQLite_autoset::set(const char* fld, bool var)
+{
+  set(fld, var ? "SI" : "NO");
+}
+
+// Legge il valore di un campo variant
+const TVariant& TSQLite_autoset::get(const char* fld) const
+{
+  const TVariant* var = (const TVariant*)_fields.objptr(fld);
+  return var ? *var : NULL_VARIANT;
+}
+
+// Converte un variant in una stringa valida per SQLite
+const TString& TSQLite_autoset::var2str(const TString& fldname, const TVariant& var) const
+{
+  const TFieldtypes vt = var.type();
+  if (vt == _realfld)
+  {
+    const TCurrency v(var.as_real(), "", ZERO, fldname.find("IMPONIBILE")>0 || fldname.find("IMPOSTA")>0);
+    TString& tmp = get_tmp_string();
+    tmp << '\'' << v.string() << '\''; 
+		tmp.replace(',','.');
+	return tmp;
+  }
+  if (vt == _datefld)
+  {
+    TString& tmp = get_tmp_string();
+    tmp << '\'' <<  var.as_date().string(full, '-', full, full, amg_date) << '\'';
+    return tmp;
+  }
+
+  const TString& str = var.as_string();
+
+  bool apici = vt == _alfafld;
+  if (apici && str[0] != '0' && real::is_natural(str))
+    apici = false;
+  
+  if (!apici)
+    return str;
+  
+  TString& tmp = get_tmp_string();
+  tmp = str;
+  for (int a = str.rfind('\''); a >= 0; a--)
+  {
+    if (tmp[a] == '\'')
+      tmp.insert("'", a);
+  }
+  tmp.insert("'", 0);
+  tmp << '\'';
+  return tmp;
+}
+
+// Elimina il record in base ai campi chiave
+bool TSQLite_autoset::remove()
+{
+  TString256 query;
+  query << "DELETE FROM " << _table << " WHERE ";
+  int nkf = 0;
+  FOR_EACH_TOKEN(_key, fld)
+  {
+    const TVariant& var = get(fld);
+    if (!var.is_null())
+    {
+      if (nkf++ > 0)
+        query << " AND ";
+      query << fld << '=' << var2str(fld, var) ;
+    }
+  }
+  CHECKS(nkf >= 2, "Can't remove partial key on table ", (const char*)_table);
+  query << ';';
+  return xvt_sql_execute(_db, query, NULL, 0L) > 0;
+}
+
+// Callback per la sottostante funzione search()
+static int TSQLite_autoset_search_record(void* jolly, int cols, char** values, char** names)
+{
+  TSQLite_autoset& rec = *(TSQLite_autoset*)jolly;
+  for (int i = 0; i < cols; i++)
+    rec.set(names[i], values[i]);
+  return 0;
+}
+
+// Carica un record in base ai campi chiave
+bool TSQLite_autoset::search()
+{
+  CHECKS(_fields.items() >= _key.items(), "Can't search partial key on table ", _table);
+  TString256 query;
+  query << "SELECT * FROM " << _table << " WHERE ";
+  FOR_EACH_TOKEN(_key, fld)
+  {
+    const TVariant& var = get(fld);
+    if (!var.is_null())
+      query << fld << '=' << var2str(fld, var) << " AND ";
+  }
+  query.rtrim(5);
+  query << ';';
+  return xvt_sql_execute(_db, query, TSQLite_autoset_search_record, this) == 1;
+}
+
+// Carica un record con le chiavi che passo
+bool TSQLite_autoset::search(const char* key, ...)
+{
+  _fields.destroy();
+
+	va_list marker;
+  va_start(marker, key);
+	int i = 0;
+  while (key != NULL)
+  {
+		set(_key.get(i), key);
+		i++;
+		key = va_arg(marker, const char *);
+  }
+  va_end(marker);
+
+	return search();
+}
+
+// Aggiunge un record al db
+bool TSQLite_autoset::insert()
+{
+  CHECKS(_fields.items() > _key.items(), "Can't insert empty record on table ", _table);
+
+  TString query, values;
+  query << "INSERT INTO " << _table << "\n(";
+  FOR_EACH_ASSOC_OBJECT(_fields, obj, fld, itm)
+  {
+    const TVariant& var = get(fld);
+    if (!var.is_null())
+    {
+      query << fld << ',';
+      values << var2str(fld, var) << ',';
+    }
+  }
+  query.rtrim(1); values.rtrim(1);
+  query << ")\nVALUES (" << values << ");";
+  return xvt_sql_execute(_db, query, NULL, 0L) == 1;
+}
+
+// Imposta una tabella su cui fare le operazioni
+bool TSQLite_autoset::setTable(const char* table, const TFilename& db, const TFilename& inipath)
+{
+	if(db.ok())
+		_db  = xvt_sql_open(_dbname, user(), "", _dbname.path());
+	if(inipath.ok())
+		_inipath = inipath;
+
+	_key = ini_get_string(_inipath, table, "INDEX_1");
+  CHECKS(!_key.empty_items(), "Invalid primary key for table ", table);
+	return !_key.empty_items();
+}
+
+// Crea un record della tabella data ed imposta i nomi dei campi chiave
+TSQLite_autoset::TSQLite_autoset(const TFilename& db, const TFilename& inipath, const char* table) 
+	: _dbname(db), _inipath(inipath), _table(table), _key(15, ',')
+{
+	_db  = xvt_sql_open(_dbname, user(), "", _dbname.path());
+	if(table != NULL)
+		setTable(table);
+}
\ No newline at end of file
diff --git a/src/include/strings.cpp b/src/include/strings.cpp
index 9a2226538..05d155842 100755
--- a/src/include/strings.cpp
+++ b/src/include/strings.cpp
@@ -517,6 +517,20 @@ const TString& TString::before(const char* str) const
   return *this;
 }
 
+const TString& TString::get_word(int from) const
+{
+	TString& ret = get_tmp_string();
+	char c = _str[from];
+	int l = len();
+	while(from < l && c != ' ' && c != '\t' && c != '\n' && c != '\f' && c != '\v') // spazio, tab, newline, newpage, vertical tab
+	{
+		ret << c;
+		from ++;
+		c = _str[from];
+	}
+	return ret;
+}
+
 // Certified 100%
 TString& TString::cut(int n)
 {                
diff --git a/src/include/strings.h b/src/include/strings.h
index bd5f79629..0823624e6 100755
--- a/src/include/strings.h
+++ b/src/include/strings.h
@@ -128,6 +128,8 @@ public:
   // @cmember Ritorna l'oggetto TString prima della string passata
   const TString& before(char c) const;
   const TString& before(const char* str) const;
+	// @cmember Ritorna la parola successiva alla posizione passata
+	const TString& get_word(int from = 0) const;
 
   // @cmember Ritorna un oggetto TString temporaneo composto dai count caratteri da sinistra
   TString sleft(int count) const 
diff --git a/src/include/utility.cpp b/src/include/utility.cpp
index e635713ba..710d73ca6 100755
--- a/src/include/utility.cpp
+++ b/src/include/utility.cpp
@@ -707,8 +707,3 @@ void quoted_string(TString& query, const char* val)
   }
   query << '\'';
 }
-
-TString get_iva_sirio() 
-{ 
-	return "04879210963"; 
-}
diff --git a/src/include/utility.h b/src/include/utility.h
index 8e64b6319..fcb3f581e 100755
--- a/src/include/utility.h
+++ b/src/include/utility.h
@@ -9,6 +9,10 @@
 #include <array.h>
 #endif
 
+#ifndef __VARIANT_H
+#include <variant.h>
+#endif
+
 #define STRINGIFY(x) #x
 #define TOSTRING(x) STRINGIFY(x)
 #define SAFE_DELETE(p) { delete p; p = NULL; }
@@ -66,6 +70,7 @@ long daytime();
 bool expand_sys_vars(TString& str);
 void quoted_string(TString& query, const char* val);
 
-TString get_iva_sirio();	// Ritorna la partita IVA della Sirio
+inline const char* get_iva_sirio()	// Ritorna la partita IVA della Sirio
+{ return "04879210963"; }
 
 #endif /* __UTILITY_H */
diff --git a/src/include/validate.cpp b/src/include/validate.cpp
index 6d6b07381..5198e1c16 100755
--- a/src/include/validate.cpp
+++ b/src/include/validate.cpp
@@ -286,12 +286,12 @@ HIDDEN bool _cf_val(TMask_field& f, KEY key)
     return true;
   
   const TString& cf = f.get();
+	const TString& stato = get_fld_val_param(f, 0);
   bool ok = true;
 
   if (cf.empty()) return true;
   if (isdigit(cf[0]) && cf.len() >= 11)
-  {
-    const TString& stato = get_fld_val_param(f, 0);
+  {  
     if (stato.full() && stato != "IT") 
       return true;
     if (cf[0]>='8' && cf.len() == 11)   // codice fiscale ONLUS
@@ -306,7 +306,7 @@ HIDDEN bool _cf_val(TMask_field& f, KEY key)
     ok = __cf_check(cf);
   if (!ok)
   {
-    if(f.dirty())
+		if(f.dirty() && (stato.empty() || stato == "IT"))
     {
       ok = f.yesno_box(TR("Codice fiscale errato: si desidera accettarlo ugualmente?"));
       if (ok) f.set_dirty(false);
@@ -376,7 +376,7 @@ HIDDEN bool _xt_cf_val(TMask_field& f, KEY key)
   if (f.mask().query_mode()) 
     return true;
   
-  TString16 cf = f.get(); 
+  TString cf = f.get(); 
   if (cf.blank()) 
     return true;
   
@@ -391,9 +391,9 @@ HIDDEN bool _xt_cf_val(TMask_field& f, KEY key)
 
   TMask& m = f.mask();
   
-  TMask_field& fld_sex = m.field(get_int_val_param(1));
-  TMask_field& fld_dat = m.field(get_int_val_param(2));
-  TMask_field& fld_com = m.field(get_int_val_param(3));
+  TMask_field& fld_sex		= m.field(get_int_val_param(1));
+  TMask_field& fld_dat		= m.field(get_int_val_param(2));
+  TMask_field& fld_com		= m.field(get_int_val_param(3));
   
   const char sesso = fld_sex.get()[0];
   TString16 data = fld_dat.get();