Hello, this is not the purpose of the threshold. If it did that, it would be useless.
The theshold means "accept orders if you have at least that many items in storage". It allows you to batch deliveries.
An "order" can be seen as "I want you to deliver this amount of this item".
Requesters do this :
- Requester Antenna reads your signal : 100 iron plates, and interprets it as "this platform wants to have 100 iron plates at all times"
- Counts the amount of plates you have in storage (say 30), as well as the space available to receive items.
- Broadcasts on the network "Hey ! I want 70 iron plates, who can provide ?"
- One nearby provider receives the message and goes "Ah ! Me ! Look, I have 70 iron plates, and I'm allowed to give them away because my threshold is 30 !"
- Provider puts all the iron plates in a single cargo pods, sends it.
If it worked like you want, your provider would be sending items one by one, as soon as they pass the threshold, using one cargo pod to send one item, therefore potentially making all your cargo bays busy and locking your platform in place.
Doing what you ask would require adding a feature allowing you to set an amount of items to "ignore". With would add complexity and compute time to a system that is already relatively hard to understand by the players (proof being your thread).
You have solutions with circuit network and logistics on your platform to handle what you want. If you want your platform to keep items inside, either don't put them in the hub, or use channels to make sure your provider will only serve requesters that demand less items that your provide threshold.