Would you mind providing some additional context about the scenario you are trying to address? Are you trying to do this as part of login or as part of normal processing? Is there a connector to the external database? Is the OperatorID that you are interested in the OperatorID that you used to log into the portal or is this operatorID for an operator that you are creating in the portal?
What i'm trying to do is that i'm trying to compare the operator id that is entered from the login to those there in the database.For this process i have mapped a class mapping.And in that class i have used a activity as above.What i want is to flag when the operator id used in the login does not match to those in the db and send a message.
Do you mean, you want to verify the current operator is present in a list returned by Obj-Browse? If so, you can verify this using 'IsInPageList' function and based on the result you may set the relevant message.
Please let me know if I understood your requirement differently.