diff --git a/htdocs/admin/ihm.php b/htdocs/admin/ihm.php
index fa83d5d48398d..fc34171a3e587 100644
--- a/htdocs/admin/ihm.php
+++ b/htdocs/admin/ihm.php
@@ -83,7 +83,7 @@
 {
 	dolibarr_set_const($db, "MAIN_LANG_DEFAULT", $_POST["MAIN_LANG_DEFAULT"], 'chaine', 0, '', $conf->entity);
 	dolibarr_set_const($db, "MAIN_IHM_PARAMS_REV", (int) $conf->global->MAIN_IHM_PARAMS_REV+1, 'chaine', 0, '', $conf->entity);
-	dolibarr_set_const($db, "MAIN_MULTILANGS", $_POST["MAIN_MULTILANGS"], 'chaine', 0, '', $conf->entity);
+	//dolibarr_set_const($db, "MAIN_MULTILANGS", $_POST["MAIN_MULTILANGS"], 'chaine', 0, '', $conf->entity);
 
 	dolibarr_set_const($db, "MAIN_THEME", $_POST["main_theme"], 'chaine', 0, '', $conf->entity);
 
@@ -241,13 +241,15 @@
 // Default language
 print '<tr class="oddeven"><td class="titlefield">'.$langs->trans("DefaultLanguage").'</td><td>';
 print $formadmin->select_language($conf->global->MAIN_LANG_DEFAULT, 'MAIN_LANG_DEFAULT', 1, 0, 0, 0, 0, 'minwidth300', 2);
+print '<input class="button" type="submit" name="submit" value="'.$langs->trans("Save").'">';
 print '</td>';
 print '<td width="20">&nbsp;</td>';
 print '</tr>';
 
 // Multilingual GUI
 print '<tr class="oddeven"><td class="titlefield">'.$langs->trans("EnableMultilangInterface").'</td><td>';
-print $form->selectyesno('MAIN_MULTILANGS', $conf->global->MAIN_MULTILANGS, 1);
+//print $form->selectyesno('MAIN_MULTILANGS', $conf->global->MAIN_MULTILANGS, 1);
+print ajax_constantonoff('MAIN_MULTILANGS');
 print '</td>';
 print '<td width="20">&nbsp;</td>';
 print '</tr>';
diff --git a/htdocs/install/mysql/migration/11.0.0-12.0.0.sql b/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
index 7436d8d8c3d72..b0ecc2b9639b2 100644
--- a/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
+++ b/htdocs/install/mysql/migration/11.0.0-12.0.0.sql
@@ -36,3 +36,22 @@
 
 ALTER TABLE llx_societe_rib ADD COLUMN stripe_account varchar(128);
 
+
+create table llx_object_lang
+(
+  rowid          integer AUTO_INCREMENT PRIMARY KEY,
+  fk_object      integer      DEFAULT 0 NOT NULL,
+  type_object    varchar(32)  NOT NULL,					-- 'thirdparty', 'contact', '...'
+  property       varchar(32)  NOT NULL,
+  lang           varchar(5)   DEFAULT 0 NOT NULL,
+  value          text,
+  import_key varchar(14) DEFAULT NULL
+)ENGINE=innodb;
+
+
+
+ALTER TABLE llx_object_lang ADD UNIQUE INDEX uk_object_lang (fk_object, type_object, property, lang);
+
+
+
+
diff --git a/htdocs/install/mysql/tables/llx_object_lang.key.sql b/htdocs/install/mysql/tables/llx_object_lang.key.sql
new file mode 100644
index 0000000000000..31cda3c8bfa06
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_object_lang.key.sql
@@ -0,0 +1,20 @@
+-- ============================================================================
+-- Copyright (C) 2019      Laurent Destailleur  <eldy@users.sourceforge.net>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <https://www.gnu.org/licenses/>.
+--
+-- ============================================================================
+
+
+ALTER TABLE llx_object_lang ADD UNIQUE INDEX uk_object_lang (fk_object, type_object, property, lang);
diff --git a/htdocs/install/mysql/tables/llx_object_lang.sql b/htdocs/install/mysql/tables/llx_object_lang.sql
new file mode 100644
index 0000000000000..9bbc296d27cf5
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_object_lang.sql
@@ -0,0 +1,31 @@
+-- ============================================================================
+-- Copyright (C) 2019      Laurent Destailleur  <eldy@users.sourceforge.net>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <https://www.gnu.org/licenses/>.
+--
+-- ============================================================================
+
+
+-- Table to store some translations of values of objects 
+
+create table llx_object_lang
+(
+  rowid          integer AUTO_INCREMENT PRIMARY KEY,
+  fk_object      integer      DEFAULT 0 NOT NULL,
+  type_object    varchar(32)  NOT NULL,					-- 'thirdparty', 'contact', '...'
+  property       varchar(32)  NOT NULL,
+  lang           varchar(5)   DEFAULT 0 NOT NULL,
+  value          text,
+  import_key varchar(14) DEFAULT NULL
+)ENGINE=innodb;