Hello, in the model attached i want to limitate the item.sez == 1 input at a max of 4 at the same time. another item of the same type can enter only if one of them exit. The processor can have a max of 9 items in process at the time. The other item.sez don't have a input max content rule. I'm trying to make work the processflow u see in the model but i'm missing something.