Combining script isn´t working. Please help

[Timotej]

Hey everyone
I am trying to make a script of combining an obsidian("rock") and a guiding rod ("stick") to make a hammer.
Unfortunately, the script isn´t working. Can you tell me where´s the problem?

My inventory.hps looks like this.


void OnStart()
{
AddCombineCallback("", "stick", "rock", "CombineFunc", true);
}
void CombineFunc(string &in asItemA, string &in asItemB)
{
PlayGuiSound("15_make_hammer", 1.0f);
RemoveItem("stick"); RemoveItem("rock");
GiveItem("stone_hammer", "Puzzle", "stone_hammer", "stone_hammer.tga", 0);
}