I have a Postman collection for rest service with Prescript[Java script custom code], how to execute this custom code in Pega before the connect-rest? The custom code is using some "Postman.SetGlobalVariable" kind of functions... The custom preScript code is returning Authentication header value which is necessary for Connect-rest execution. If I add that javascript code in harness as a JS file...will the Postman.SetGlobalVariable lines execute properly? TIA