Just in case you never found an answer, or if anyone else comes along trying to find out, here you go:

Item names work as such: module.item i.e. the classic Base.BaseballBat (in my case I needed Greenfire.RollNylon)

Have a look here and you'll find full lists of all the items etc, with the module names at the top:
Program Files (x86)\Steam\steamapps\workshop\content\108600\1703604612\mods\jiggasGreenFire\media\scripts

Hope this helps anyone who was stumped like me