Reply to 4th fx knobs button not working

hey guys,

using the djranking s midimapping for the vci 100 i am very happy but only one problem: in the fx knobs section the first 3 knobs and buttons are working well but the 4th button is turning on the monitor cue for deck a (and c) instead of turning on the fx. the knob is working. cant find it in the mapping. can anyone tell me how to map this button right?

this evening we are going to use the vci for the first time in action

thanks!

jacob