Automatic bomb release in CCRP mode

How work?

So using dumb bombs. I set target point. Swap sight to bombs auto, toggle "automatic release in CCRP mode" to on fly at target.... then no release...

I always run with secondary weapons selected.

Do I need to have a ripple quantity selected? Do I need to hit the bomb release once to "give permission" or do I still need to hold it down like regular CCRP?

When it says automatic release i assume fly at thing you want to make go boom. Then plane auto release and make thing go boom without my input.

What am I doing wrong?

Not sure if it changes per aircraft, but generally using f18s, f15s and AV8B