Enemy does not patrol

[.eX.]

void OnStart()
{
SetEntityActive("servant_brute_1", true);
AddEnemyPatrolNode("servant_brute_1","PathNodeArea_1", 3.50,"");
AddEnemyPatrolNode("servant_brute_1","PathNodeArea_2", 0,"");
AddEnemyPatrolNode("servant_brute_1","PathNodeArea_3", 0,"");
AddEntityCollideCallback("servant_brute_1", "ScriptArea_1", "MyFunc", false, 0);
}
void MyFunc(string &in asParent, string &in asChild, int alState)
{
FadeEnemyToSmoke("servant_brute_1", true);
}


this works perfectly thx u explained everything perfectly