In “Pin Connection” add a side chain from the audio track to Onset Trigger.
Try adjusting Signal Threshold to low enough to catch the audio.
But nothing happens, no note is triggered, even with the lowest threshold, way below the level of the audio track. (The MIDI indicator never lights up.)
That plugin is intended for kick-drum replacement, low frequencies only.
You could try to set the filter-freq to max (300Hz) and increase the bandwidth to 120Hz, so that any freq between 180Hz and 420Hz may trigger a note. That may or may not be sufficient for the signal you want to trigger on.