Hi Chao,
This is often due to a dynamic frame Id or Name. This is remedied by using the tilde (~) character to indicate a partial match. If the Src string contains a dynamic query, set UseQuery to False.
Please check this article and perform the steps described.
If the problem persists please send us the execution log. A Jing video of the behavior may also help us diagnose your issue.
Let me know if this approach works for you.
Regards,
Boyan Boev
the Telerik team