Calculating overtime

Hi all, I am hoping someone can give me some advice on how P6 calculates overtimes for the resources. We have created a resource and selected that we allow overtime with a factor of 1.5 and the max units/day = 8 and price/unit = $100. We created an activity that has the resource working 16 hours/day but nothing is calculating for the overtime units or costs. We have looking at this with actuals on the activity as well as without and the overtime does not calculate. Is there something we are missing?

Thanks!