Why won't Studio One 4 allow more than 4 bars precount in the metronome window? I need more than that.

I can not change the precount bars to more than 4-why not?

I need 8 or 12 bars sometimes in the precount. When I change the the number of bars to more than 4, it won't automatically goes back to 4. Why can't have more than 4 bars precount?