Please help with my custom story hps file!!!

[mrburritos31]

So ive been working on a custom story and my hps file wont work it crashes the game this is the file:

void OnStart()
(
AddUseItemCallback("OpenDoor", "key_study_1", "level_wood_1", "UnlockLevelDoor", true);
)
void UnlockLevelDoor(string &in item, string &in entity)
(
SetLevelDoorLocked(entity, false);
)

Please help thanks!