Path node issue...

[Khyrpa]

but their names are the same... so how is that possible?

And also when you trigger this:
AddEntityCollideCallback("Player" , "Monster_Walk_Trigger" , "MonsterWalk1" , true , 1);

it makes so that everything inside this happens
void MonsterWalk1(string &in asParent , string &in asChild , int alState)
{
}
in your case its these:
SetEntityActive("Monster1" , true);
AddEnemyPatrolNode("Monster1", "PathNodeArea_35", 3, "");

so the bolded one here:
AddEntityCollideCallback("Player" , "Monster_Walk_Trigger" , "AddEnemyPatrolNode" , true , 1);

would need
void AddEnemyPatrolNode(string &in asParent , string &in asChild , int alState)

this is kind of confusing... I don't know what youre trying to do