Is it possible to set needed amount for items?

Hello,
First let me compliment you on a well done script.
I would like to ask a question/suggestion. Is it possible to add the ability to block certain items from a cargo container?
Example: I would like to have a container that holds my ore, but I don't want ice to be added to this specific container.

Thank you.

I'm getting a "Script execution terminated, script is too complex. Please edit and rebuild script." error.
It worked before, but this is what always displays