I see in one server.
General
flamethrower heal
flamethrower heal
addhook("hit", "flamethrower_heal")
function flamethrower_heal(id,source,weapon,hpdmg,apdmg)
	if (weapon == 46)
		player(id, "health") = player(id, "health")+10
	end
end
dofile("sys/lua/flame_heal.lua")
not work.plz upload this file.
addhook("hit", "flamethrower_heal")
function flamethrower_heal(id,source,weapon,hpdmg,apdmg)
if (weapon == 46) then
player(id, "health") = player(id, "health")+10
end
end
addhook("hit", "flamethrower_heal")
function flamethrower_heal(id,source,weapon,hpdmg,apdmg)
	 if (weapon == 46)
	 	parse("sethealth "..id.." "..player(id, "health")+10)
	end
end