[LVL ED] FATAL ERROR plz help

[zombiehacker595]

help my amnesia custom story scripting is not working
this is my script so far
void OnStart()
{
SetEntityPlayerInteractCallback("key_study_1", "ActivateMonster", true);
}
void OnEnter()
{
}
void OnLeave()
{
}
void ActivateMonster(string &in item)
{
SetentityActive("servant_grunt_1", true);
AddEnemyPatrolNode("servant_grunt_1", "PathNodeArea_1". 0, "Idle");
AddEnemyPatrolNode("servant_grunt_1", "PathNodeArea_2". 0, "Idle");
}
and i get this message
FATAL ERROR could not load script file
custom_stories/test/maps/intro.hps
main 19,60 : ERR: expected identifier
main 20,60 : ERR: expected indentifier
how can i fix this i did it before and it worked than i added level doors or something now its fucked little help plz ?