Will you upload a screenshot of your function library so I can have a look ? Additionally , Can you send me a copy of your function library or project? If the PBR is getting reset and I can reproduce that on my end we might have a starting point for why this error is occurring. I believe the error is occurring because that node is switching to PBR, and the reference is returning to the cast node as opposed to any node that would find value with the information, which is why it works when you have a normal input. I’m going to see if I can get the switch to occur on my end or if I can get a REINST error with a PBR on my end.