Correction : id du champ multi-select

app/View/Elements/Formulaires/champDuFormulaire.ctp

@@ -210,7 +210,7 @@ foreach ($champs as $key => $value) {
                     .'</label>'
                 .'</div>'
                 .'<div class="col-md-8">'
-                    .'<input type="hidden" name="multi-select" value="" id="multi-select_"/>'
+                    .'<input id="'.$details['name'].'" type="hidden" name="'.$details['name'].'" value=""/>'
                     .'<select id="'.$details['name'].'" name="multi-select" class="form-control multiSelect contentMultiSelect" multiple="multiple">';
                         foreach ($details['options'] as $key => $val) {
                             $selected = "";