Error. missing a ";" or ","

[Hartmann]

wrong function then, you need a callback.
use this inside OnStart():
SetEntityCallbackFunc("key_3", "OnPickup");

Then instead of this:
void SetEntityCallbackFunc(string& asName, string& asCallback);
{
AddPropImpulse("mansion_3", 0, 0, 10, "World");
AddTimer("StopLook", 3, "LookAtDoor");
PlaySoundAtEntity("", "unlock_door.snt", "mansion_5", 0.0f, true);
StartPlayerLookAt("mansion35", 10, 10, "");
}

use this:
void OnPickup(string &in asEntity, string &in type)
{
AddPropImpulse("mansion_3", 0, 0, 10, "World");
AddTimer("StopLook", 3, "LookAtDoor");
PlaySoundAtEntity("", "unlock_door.snt", "mansion_5", 0.0f, true);
StartPlayerLookAt("mansion35", 10, 10, "");
}
by the way, you really want the player to look at "mansion35" or do you mean mansion_5 and you got a typo? Anyway, fix it if you got one.

Also, at every PlaySoundAtEntity function, use the extension .snt at the sound name. Example:
PlaySoundAtEntity("", "unlock_door.snt", "mansion_1", 0.0f, true);

Ty for the tips but i still get the same error

---

wrong function then, you need a callback.
use this inside OnStart():
SetEntityCallbackFunc("key_3", "OnPickup");

Then instead of this:
void SetEntityCallbackFunc(string& asName, string& asCallback);
{
AddPropImpulse("mansion_3", 0, 0, 10, "World");
AddTimer("StopLook", 3, "LookAtDoor");
PlaySoundAtEntity("", "unlock_door.snt", "mansion_5", 0.0f, true);
StartPlayerLookAt("mansion35", 10, 10, "");
}

use this:
void OnPickup(string &in asEntity, string &in type)
{
AddPropImpulse("mansion_3", 0, 0, 10, "World");
AddTimer("StopLook", 3, "LookAtDoor");
PlaySoundAtEntity("", "unlock_door.snt", "mansion_5", 0.0f, true);
StartPlayerLookAt("mansion35", 10, 10, "");
}
by the way, you really want the player to look at "mansion35" or do you mean mansion_5 and you got a typo? Anyway, fix it if you got one.

Also, at every PlaySoundAtEntity function, use the extension .snt at the sound name. Example:
PlaySoundAtEntity("", "unlock_door.snt", "mansion_1", 0.0f, true);

Ty for the tips but i still get the same error

ok i fixed the error but now the key wont unlock mansion_5.. shit just got serios