Keep value on validtions failure

htdocs/comm/action/fiche.php

@@ -538,7 +538,7 @@ if ($action == 'create')
 
 	// Busy
 	print '<tr><td width="30%" class="nowrap">'.$langs->trans("Busy").'</td><td>';
-	print '<input id="transparency" type="checkbox" name="transparency" >';
+	print '<input id="transparency" type="checkbox" name="transparency"'.($actioncomm->transparency?' checked="checked"':'').'>';
 	print '</td></tr>';
 
 	// Realised by