Thank you Evgeny and Stefan, very helpful. A minor note: There is a typo at the end of the control panel url (cspv->csp).

Please disregard my previous reply.

https://cedocs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=GZAP_page_really_programming#GZAP_client_functions
 

You're welcome Ting! Hope you figure out the issue with the code.

Best,

Jean