Script problem, help

[Neelke]

I've been trying to learn making some custom scripts recently and has turned out good for me. However, I now made one called InitiateBruteGrunt.
When I start the game it says that this script wants an expected "(" or something. I haven't been able to work it out. Would you guys mind giving me a hand?

//bool asActive = if the monsters are triggered
//string& asName = if a monster name is in there and active it will chase the player, if empty nothing happens

void InitiateGruntBrute(bool asActive, string& asName)
{
SetEntityActive("nomusic_brute_1", asActive);
SetEntityActive("nomusic_grunt_1", asActive);

ShowEnemyPlayerPosition(asName);
}

The issue according to the game:

InitiateGruntBrute(true, string& asName);

Sorry if I am bad at explaining, can't help it