OK i fixed it (kinda) here it its it makes some neutrons when water is hit with fire -----------------------
tpt.el.fire.name="BLFM" tpt.el.fire.description="So hot it turn water to neutrons" tpt.el.fire.color=0xC77400 tpt.el.fire.weight=700 tpt.el.fire.menusection=3 math.randomseed(os.time()) function growth(i,x,y,s,n) type=tpt.get_property("type",x+math.random(-1,1),y+math.random(-1,1)) if type==tpt.el.watr.id then tpt.parts[i].type=tpt.el.neut.id end end