How do I interface to a laser with the Pokey57

We have a video that shows the connection and implementation of a CO2 laser on the youtube channel here: https://www.youtube.com/watch?v=2M2SCYTNDi0&t=17s That video should show how I'm connecing the Pokeys57CNC to the laser tube power supply TL/TH terminal. I also show how to configure Mach3 to trigger the laser on and off using the M7 and M9 codes. Let me know if this helps.