Hello! Might I suggest an alternative? I use this mod: https://mods.factorio.com/mod/additional-paste-settings
It allows you to copy and paste settings from a production machine to a requester chest in the same way that vanilla lets us copy-paste settings between two production machines, and if you turn on "additive values" in the mod settings for this mod, then you can copy-paste the settings for each production machine onto the requester chest, and it will add the items and amounts for each production to the total requested items for that chest.
