Newbie Variable programming

Hello,

I have only recently been trying to use some variable programs and have been able to get them to work. My machine is a 18i-MB. While doing a circle interpolation, it can also go down in Z.

I have made a couple programs that uses an IF statement. But then values inputted have to equal my depth in Z to get my finish depth (Z step 2mm final depth 8mm).

So my question is, is there a way to get it to do the circle interpolation while going down in Z, BUT, when the amount in Z is not divisable by my final depth (EX; Z step 2mm, final depth 6.75mm), it will stop at the final Z depth and finish doing the circle interpolation of my hole?

Thanks for your help!