Multiple use of a void OnStart, need help D:

[KeysOfMyMind]

So hi guys.
i'm new to scripting and I want this script to work and it should, but it doesn't for some reason.



void OnStart()
{
AddUseItemCallback("", "crowbar_1", "mansiondoor1", "UsedCrowbarOnDoor", true);
AddEntityCollideCallback("crowbar_joint_1", "ScriptArea_Joint", "CollideAreaBreakDoor", true, 1);
}


void UsedCrowbarOnDoor(string &in asItem, string &in asEntity)
{
AddTimer("", 0.2, "TimerSwitchShovel");
RemoveItem("crowbar_1");
}


void TimerSwitchShovel(string &in asTimer)
{
PlaySoundAtEntity("","puzzle_place_jar.snt", "", 0, false);
SetEntityActive("crowbar_joint_1", true);
}


void CollideAreaBreakDoor(string &in asParent, string &in asChild, int alState)
{
AddPlayerSanity(25);
PlayMusic("10_puzzle01.ogg", false, 0.7, 0.1, 10, false);
SetSwingDoorLocked("mansiondoor1", false, true);
AddPropImpulse("mansiondoor1", 0, 0, -50, "World");
SetSwingDoorDisableAutoClose("mansiondoor1", true);
SetSwingDoorClosed("mansiondoor1", false, false);
SetMoveObjectState("mansiondoor1", 1);
PlaySoundAtEntity("","break_wood_metal", "ScriptArea_Dust", 0, false);
CreateParticleSystemAtEntity("", "ps_hit_wood", "ScriptArea_Dust", false);
SetEntityActive("crowbar_joint_1", false);
SetLocalVarInt("Door", 1);
}

//Scare Here
{
AddEntityCollideCallback("Player", "push", "Push", true, 1);
AddEntityCollideCallback("Player", "door_slam", "Slam", true, 1);
}


void Push(string &in asParent, string &in asChild, int alState)
{
PlaySoundAtEntity("", "react_pant.snt", "push", 0, false);
AddPlayerBodyForce(30000, 0, 0, false);
}


void Slam(string &in asParent, string &in asChild, int alState)
{
SetSwingDoorClosed("mansiondoor1", true, true);
SetSwingDoorLocked("mansiondoor1", true, true);
PlaySoundAtEntity("", "00_laugh.snt", "door_scare", 0, false);
}

My scare part crashes the game.
Some help please.

Also I'd like to make it so that I have another area the player hits up against the wall where he collapses and gasps from hitting the wall.
Also the value for the AddPlayerBodyForce propels the player forward, I'd like him to be push backwards into the wall area.