[SCRIPT] Function doesn't get called after interaction

[EXAWOLT]

////////////////////////////
// Run first time starting map
void OnStart()
{
AddUseItemCallback("", "knife", "floor", "sleep", true);
}

void sleep(string &in asItem, string &in asEntity)
{
(write the scripts that you want to call here)
}

////////////////////////////
// Run when entering map
void OnEnter()
{

}

////////////////////////////
// Run when leaving map
void OnLeave()
{

}