Hi,   Try:   MainForm.Script add: Ext.form.field.File.override(      {onFileChange: function() {        this.lastValue = null; // force change event to get fired even if the user selects a file with the same name        Ext.form.field.File.superclass.setValue.call(this, this.fileInputEl.dom.value.replace(/C:\\fakepath\\/g, ''));        }      } ) Best regards.