Halion sonic se in Cubasele8-multi program rack

I seem to be able to load only two programs or instruments into the multi program rack…if I load or drop more, the sound doesn’t work…I thought maybe since I used up either the output busses or have the busses in stereo…I would like to know if there is a limit to the amount of programs in Halion sonic se multi program rack you’re allowed to use and actually “hear” live at one time together?
I figured it out…put everything on channel 2 and keep the output busses on main for all multi program rack slots…