Hello Vishnu,

This article basically tells you how to pass the value of the catalog item variable which is outside of MRVS into the MRVS. If you are facing issue with the populating the data in the MRVS, check this article https://community.servicenow.com/community?id=community_article&sys_id=86971c8bdb4108106064eeb5ca961...

If you are still facing issue after that, kindly create a question with the issue and let me know. I will check and assist you.