Hey @MilindPatil ,
thanks for custom content for forge 
I just played around with it and I couldn’t get searching for forge custom content using CQL to work.
You can find a POC for reproducing the issue here:
https://bitbucket.org/siegelf/forge-poc-custom-content-search/src/master/
I was just trying to do a simple cql type=<forge custom content key>, but the response is always empty. Is forge custom content maybe not indexed correctly?
Cheers,
Fabian