Okuma MC-4VB tool change variable for active tool

Hello,

I am working on a post for a Okuma MC-4VB vertical 50 taper mill. I started with a MPmaster post. I need it to have the following code before every tool change. How do I do this in the post.. X5 or X6 Mastercam...


Needs to look like this..

(prog)
...
N2 IF [VATOL EQ 10] N4 <---------------- I need the [VATOL EQ (the current tool nuber)] N4 --------------- to post before every tool change...
N3 T10 M6
N4 S---- M3
.......
........

In my MC-4Vb, VATOL is the system variable for active tool. Line N2 is a conditional that will jump to N4 if the tool 10 is already there, if not, it will proceed to N3 and change the tool

Thanks