Help me with the report, i am unable to get the process variable name in report

try wrapping the definition expression in tostring().

Also, it looks like you're trying to use old process reporting.  
Since it also looks like you're working with data fabric - have you considered more modern reporting with SAIL?

-r

Record type values will not show up in the report. But I think it will be available while you are trying to query from the report. Try querying and see if the issue persists.

Process reports do not support record type data. You will have to store the required data in a separate process variable.