Activating a script area

[ApeCake]

Hello again. So I thought about something very simple, a script area that activates upon a key pickup. When I walk into the script area nothing happens, but after I picked up the key and walk in it it does something (in this case push the player back) (I had in mind delete the script area after one use). However, after I picked up the key and walked in the area nothing happened. Here's my script. The script area is called "pusharea" and the key "tocarnellroomkey". The area is not active in the beginning obviously.



void OnStart()

{
AddEntityCollideCallback("Player", "pusharea", "Push", false, 1);
SetEntityCallbackFunc("tocarnellroomkey", "OnPickupKey");
}


//The push script
void Push(string &in asParent, string &in asChild, int alState)
{
PlaySoundAtEntity("", "react_pant.snt", "push", 0, false);
AddPlayerBodyForce(0, 0, -2000, false);
}

//The setting-the-area-active script
void OnPickupKey(string &in asEntity, string &in type)
{
SetEntityActive("pusharea", true);
PlaySoundAtEntity("", "scare_male_terrified5.snt", "randomatticdoor", 2, false);
}

So my guess is that SetEntityActive doesn't work on script areas? Can anyone improve this or knows what I did wrong? Thanks in advance.

EDIT: If I do the code in a code window, it gets messed up.