The Definitive Guide to Data Quality
"select u.Id, u.HermesAgentId__c from User u Where u.HermesAgentId__c = ' "+ context.GENERIC_AGENT_ID +" ' "
I was going through this post and i have used in the below way. I know it is a very old post, just thought of sharing the information.
" SFDCFieldName=\' "+context.VARIABLENAME+" \' "