This is similar to another question already asked about holding specific itemtypes in a rack until a minimum quantity is reached however it differs slightly. In the attached model (which is not working as intended), I am starting 15 of each itemtype at specific intervals. Processor 2 runs much faster than processor 1, so I would like to hold items in a rack until a specific quantity is reached. This number is what I am trying to solve for each itemtype, because Processor 2 is a continuous operation and cannot be starved. So I would like to model this so that when Type1Qty in the rack reaches 10, the transporter starts delivering items to Processor 2 until all 15 have been processed, then it should wait until 10 of itemtype 2 are accumulated, and repeat for that itemtype. I tried modeling this through process flow, and pushing the items to a list when they reach the rack. I am having issues in several parts of the model, and may be doing this incorrectly to begin with.
If this is an acceptable way to do this, how do I change the value of the event listening easily by itemtype?