fix #360

src/Form/Field/Text.php

@@ -144,6 +144,8 @@ JS
      */
     public function inputmask($options)
     {
+        Admin::js('@jquery.inputmask');
+
         $options = $this->jsonEncodeOptions($options);
 
         $this->script = "$('{$this->getElementClassSelector()}').inputmask($options);";