Hmmm, I think I see the problem. There's one setting where its generating an error (incorrectly) if you set the Param B Target RB to "Any Node" (which is also the default). When this error occurs its also setting the Update Frequency to "On Execution" - to avoid flooding with errors - which is why you arent getting any updates. I'll look to get a fix out, but it should still work in this version with a bit of tweaking if you avoid using the "Any Node" setting and keep an eye on the Update Frequency.