氚云表单不显示某按钮

后端代码设置如下：

 protected override void OnLoad(H3.SmartForm.LoadSmartFormResponse response)
    {
       
        base.OnLoad(response);
        response.Actions.Remove("Submit"); //删除按钮
        response.Actions.Remove("Save");
        response.Actions.Remove("Remove");
     
    }

常见表单按钮：