diff --git a/htdocs/modulebuilder/template/class/myobject.class.php b/htdocs/modulebuilder/template/class/myobject.class.php
index 8465f804d5c..18ca9b5ea20 100644
--- a/htdocs/modulebuilder/template/class/myobject.class.php
+++ b/htdocs/modulebuilder/template/class/myobject.class.php
@@ -116,6 +116,7 @@ class MyObject extends CommonObject
 		'fk_user_creat' => array('type'=>'integer:User:user/class/user.class.php', 'label'=>'UserAuthor', 'enabled'=>1, 'visible'=>-2, 'notnull'=> 1, 'position'=>510, 'foreignkey'=>'user.rowid'),
 		'fk_user_modif' => array('type'=>'integer:User:user/class/user.class.php', 'label'=>'UserModif', 'enabled'=>1, 'visible'=>-2, 'notnull'=>-1, 'position'=>511),
 		//'fk_user_valid' => array('type'=>'integer:User:user/class/user.class.php',      'label'=>'UserValidation',        'enabled'=>1, 'visible'=>-1, 'position'=>512),
+		'last_main_doc' => array('type'=>'varchar(255)', 'label'=>'LastMainDoc', 'enabled'=>1, 'visible'=>0, 'notnull'=>0, 'position'=>600),
 		'import_key'    => array('type'=>'varchar(14)', 'label'=>'ImportId', 'enabled'=>1, 'visible'=>-2, 'notnull'=>-1, 'index'=>0, 'position'=>1000),
 		'model_pdf' 	=> array('type'=>'varchar(255)', 'label'=>'Model pdf', 'enabled'=>1, 'visible'=>0, 'notnull'=>-1, 'position'=>1010),
 		'status'        => array('type'=>'smallint', 'label'=>'Status', 'enabled'=>1, 'visible'=>1, 'notnull'=> 1, 'default'=>0, 'index'=>1, 'position'=>1000, 'arrayofkeyval'=>array(0=>'Draft', 1=>'Validated', 9=>'Canceled')),
@@ -171,6 +172,11 @@ class MyObject extends CommonObject
 	 */
 	public $fk_user_modif;
 
+	/**
+	 * @var string public $last_main_doc
+	 */
+	public $last_main_doc;
+
 	/**
 	 * @var string import_key
 	 */
diff --git a/htdocs/modulebuilder/template/core/modules/mymodule/doc/pdf_standard_myobject.modules.php b/htdocs/modulebuilder/template/core/modules/mymodule/doc/pdf_standard_myobject.modules.php
index f8fc8466349..694263e2ec5 100644
--- a/htdocs/modulebuilder/template/core/modules/mymodule/doc/pdf_standard_myobject.modules.php
+++ b/htdocs/modulebuilder/template/core/modules/mymodule/doc/pdf_standard_myobject.modules.php
@@ -899,7 +899,7 @@ class pdf_standard_myobject extends ModelePDFMyObject
 		pdf_pagehead($pdf, $outputlangs, $this->page_hauteur);
 
 		// Show Draft Watermark
-		if ($object->statut == Facture::STATUS_DRAFT && (!empty($conf->global->FACTURE_DRAFT_WATERMARK)))
+		if ($object->statut == $object::STATUS_DRAFT && (!empty($conf->global->FACTURE_DRAFT_WATERMARK)))
         {
 		      pdf_watermark($pdf, $outputlangs, $this->page_hauteur, $this->page_largeur, 'mm', $conf->global->FACTURE_DRAFT_WATERMARK);
         }
@@ -959,7 +959,7 @@ class pdf_standard_myobject extends ModelePDFMyObject
 		$pdf->SetXY($posx, $posy);
 		$pdf->SetTextColor(0, 0, 60);
 		$textref = $outputlangs->transnoentities("Ref")." : ".$outputlangs->convToOutputCharset($object->ref);
-		if ($object->statut == Facture::STATUS_DRAFT)
+		if ($object->statut == $object::STATUS_DRAFT)
 		{
 			$pdf->SetTextColor(128, 0, 0);
 			$textref .= ' - '.$outputlangs->transnoentities("NotValidated");