I have a model with a series of machines in a line. Each of those machines consumes supplies, and are attached to the 'Material Consumption and Replenishment' process flow. At the beginning of the simulation model, I create a label at each of the machines called "Missions" that increases by 1 every time material is 'delivered' to each of to the machines; I have one label at each machine. I want to be able to display the total number of missions (add all of the 'Missions' labels) per hour on my statistics dashboard. What is the best way to display this value?