User Defined Search in SAP ABAP Monitoring: SXMB_MONI for Synch messages

Hello Experts,
I am trying to setup a used defined search criteria for synch message in S4 side. But, it is not working when executed from SXMB_MONI and working only when tested in the test search criteria.
Here are some links for this configuration -

https://lessonslearnedsap.wordpress.com/2017/07/28/user-defined-selection-criteria-on-abap-stack-in-sxi_monitor/

https://help.sap.com/doc/saphelp_nw73ehp1/7.31.19/en-us/48/c85598f63335bfe10000000a42189d/content.htm?no_cache=true

Thanks

Sugata