Mocca; hal file with button command

Hello,
I want to order the light of my machine directly from the mocca screen. How to link a button (button8 for example) with the light output. In
The party program that should go with Lazarus. The name is "moc.button.8"?

My file hal
.....
# Eclairage (pin 25 OUT)
setp hm2_5i22.0.gpio.025.is_output TRUE
net eclairage-on <= iocontrol.0.moc.button.8 ?????
net eclairage-on => hm2_5i22.0.gpio.025.out
......

For now nothing works , but I do not despair
thank you to him who gives me an idea.
Michel

hello,
here I have put under:
pastebin.com/p5bDGdqF
title : mocca pinout

thank
Michel

Hello,
thank you for your help
I tried this solution but "moc.button.8" is not recognized.
Michel

hal file
======
......
# Arrosage (pin 24 OUT)
setp hm2_5i22.0.gpio.024.is_output TRUE
net coolant-flood iocontrol.0.coolant-flood hm2_5i22.0.gpio.024.out

# Eclairage (pin 25 OUT)
setp hm2_5i22.0.gpio.025.is_output TRUE
net eclairage-on moc.button.8 => hm2_5i22.0.gpio.025.out
......

return
=====
mipretec-desktop:~$ emc
This script only needs to be run once per shell session.
EMC2 - 2.4.5
Machine configuration directory is '/home/mipretec/Documents/emc2-dev-rtai/configs/sim'
Machine configuration file is 'mipretec-c104.ini'
Starting EMC2...
CNC1.hal:158: Pin 'moc.button.8' does not exist
Shutting down and cleaning up EMC2...
Cleanup done
EMC terminated with an error. You can find more information in the log:
/home/mipretec/emc_debug.txt
and
/home/mipretec/emc_print.txt
as well as in the output of the shell command 'dmesg' and in the terminal

Hello,
Thank you Andy, why I did not think!
That was the problem.
Michel