Thanks, that seems to work. For a start I wanted to use it to trash excess items on Fulgora. But I feel I can also use it to control requests to a planet based on the content of the logistic network and not just the Cargo Landing Pad.

I want to create a circuit logic (any combinators allowed) which takes a set of items + quantity from a constant combinator and outputs how many of those items I have more than the input in my logistic network.

I can sort of get it to do that, but I struggle to get it to consider only the items ...