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I'd recommend moving this convo a thread, but if you change the item, I believe you need to set the rate and quantity again afterwards.

You may also want to try using a timeout between setting the item/quantity and the commit call, it could be an issue where it is trying to source the info it needs when u set the item and the commitLine isnt triggering properly because its not done sourcing.

Ahh that sounds like a plan, I will try both of those tomorrow