2 keys script

[DaAinGame]

void OnStart()
{
SetEntityPlayerInteractCallback("notename", "MonsterSpawm", true);
}

void MonsterSpawn(string &in asEntity)
{
SetEntityActive("monstername", true);
}

If you used pasted this without changing anything in it other then the note name I see what might've been wrong.

SetEntityPlayerInteractCallback("notename", "MonsterSpawm", true);

MonsterSpawm > MonsterSpawn.

That should make the void MonsterSpawn(string &in asEntity) work correctly.

If it still doesn't work, try MonsterSpawn(string &in item)
Anyone who may say that is incorrect, it works for me just fine.
void spawn_func(string &in item)
{
SetEntityActive("servant_grunt_1", true);
}

That works perfectly for me.