Yeah, but RND LFO on a square LFO’s DEPTH will adjust the amount of that LFO that affects the target parameter. It wouldn’t toggle it between min and max. So if the square LFO is at max/127, and you apply a RND LFO that happens to be in the middle (eg 64) to its depth, you are only modulating the target parameter by 64, not 0 or 127.
I think one way to do it would be to put a square LFO on amp vol, max depth, and set to HOLD, and then put a random LFO on its INTERLACE, which is the rate at which it alternates the LFO value with zero. So sometimes it will trig with 127 and sometimes with 0.
I also think a square wave LFO set to HOLD on amp vol, with its rate being modulated by a random LFO, could do it. But then you might need a third LFO on the RAND one to adjust what the resulting probability would be. I need to have a play with it…