Setting up a basic Z height touch off probe with a MESA 7i96

what folder tjhis button code need add ?
i not have 2.8.4 version any subroutines folder, were need add z_touch.ngc

subroutine path not have same,
my cnc have (name)/linuxcnc/config/my-machine/i has adding here macros and subroutines folders (one example has this folder). were subroutines folder need be ??

i test this not working only come error thats net ztouch halui.mdi-command-00 <= pyvcp.ztouch
and not do anything.

i used paraller port and probe have pin 15 in.