QtPlasmaC using w axis

I need help. I tried converting the a-axis to w, making it leaner. However, I keep getting errors like dro_a and torch_a. Is there an easy way to add a w-axis as z2 ? I made it by editing the handler file and ui file  to overcome these errors; however, I can get it to show the z2,  i looked at the QtVCP library there is z2 there