Help with sounds!

[MulleDK19]

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?

try with 1.0f instead of -1.0f