Push up door smooth script

[FragdaddyXXL]

so i tryed but i got an error on line 123

void opening(string &in asParent, string &in asChild, int alState)
{
122 SetSwingDoorDisableAutoClose("castle", true);
123 AddPropImpulse("castle", 0f, 0f, -900f, "world");
}
it said expected , or ) help ?

That means that it's expecting there to be a finishing parenthesis ) or it's missing a ,

Also, that -900f is going to send the door into the 4th dimension. Try something around -15f for starters.

As for the error, try looking for a missing: " or ) or a comma. I can't see where the error is, and it leads me to believe a few things:
You may have not hit "Save" in the text editor before starting up the level (happens to me all the time), or
the exception is in another area close to line 123 or
I'm blind xD.