Referring to a Data Collection Parameter in a Routing Script

Hi, I am new to SAP ME and I am wondering if there is a way to reference a data collection parameter in a routing script. For example, I have a data collection parameter that results in either a "PASS" or "FAIL". I want to reference this results and say if the result = "FAIL", return to the previous step in the routing to be reworked. Is this possible? I know there are some pre-made scripts available but I was not able to achieve my goal after messing around with them. I keep getting an error saying it is unable to reference the data collection parameter.