Help Updating old Antithesis' Hunter Fun Pack' Script

[RandomZero]

Hi, Can someone help me add a toggle to this script that will allow me to double Jump in Destiny 2, when I hold the Xbox A (Jump) button for a few seconds. I tried doing it myself by setting a Toggle to HOLD D-PAD DOWN and Y BUTTON to activate/Disable the Toggle and I created a double Jump Combo. However when I compiled the script, it returned too many errors and I can't get my head around it.

I am attaching the clean script I got from Gunter Online Resource, hoping someone can help.