Help with sounds!

[Cgturner]

Here's what I've got:

Code: (Select All)

void Collideopendoor(string &in asParent, string &in asChild, int alState)
{
    PlaySoundAtEntity("open", "door_level_wood_open.snt", "castle_arched01_1", 1, true);
    SetSwingDoorDisableAutoClose("castle_arched01_1", true);
    AddPropImpulse("castle_arched01_1", 0.0f, 0.0f, -1.0f, "prop");
}

The sound plays correctly, but the door remains closed.

EDIT:
Well I've manipulated that code as much as possible, and the door still remains shut. What is supposed to be done? Is it something with the "prop" variable?