[Ovmsdev] Inserting a Single OBD Request into the Poller

Could someone point me to an example of the correct way to insert a single OBD request into the poller? As an example, I’d like to request the VIN—but I only need to do this once, not on a recurring basis. I was previously using |PollSingleRequest|, but it no longer seems to be working as expected. Thank you in advance for your help!