Currently you can't query a specific folder from a variable name. Once they add scoping options to the manual query kb card you can create a workaround. You would have an expression card for each of the systems. Then you have a workflow variable which you will use in the expression cards. An expression card would look something like this: workflow.systemName = "systemName1" Then it would go to another node that would use the manual query with the scoping option set to search only the search the specific KB.