Can't make moving book to move through Impulse

[PutraenusAlivius]

I have a problem. What I want is when a book is pulled (book_moveable at gameplay folder), another is pulled.

I tried making but the books aren't being pulled. I put a Debug at each section, and they do appear which makes me to believe it's the Impulse. I have no other options.

Spoiler below!

PHP Code: (Select All)

///---CALLBACKS---///
void OnStart()
{
    AddEntityCollideCallback("MovingBook_1", "MovingArea_1", "TriggerBook", true, 1);
}
///---CALLBACKS---///

///---LAMPS SCRIPT---///
///---LAMPS SCRIPT---///

///---BOOK PUZZLE SCRIPT---///
void TriggerBook(string &in asParent, string &in asChild, int alState)
{        
    AddPropImpulse("MovingBook_1", 6, 0, 0, "world");
    AddPropImpulse("MovingBook_4", -6, 0, 0, "world");
    AddEntityCollideCallback("MovingBook_4", "MovingArea_4", "FirstPull", true, 1);
    AddTimer("StuckReverseFirst", 0.0001f, "UnStuckFirst");
    AddDebugMessage("First trigger works", false);
}

void FirstPull(string &in asParent, string &in asChild, int alState)
{
    int First = RandInt(2, 3);
    switch(First)
    {
        case 2:
        AddPropImpulse("MovingBook_2", -6, 0, 0, "world");
        AddEntityCollideCallback("MovingBook_2", "MovingArea_2", "SecondPull", true, 1);    
        AddDebugMessage("Case Number Two Switch Statement works", false);
            break;
        case 3:
        AddPropImpulse("MovingBook_3", -6, 0, 0, "world");
        AddEntityCollideCallback("MovingBook_3", "MovingArea_3", "ThirdPull", true, 1);
        AddDebugMessage("Case Number Three Switch Statement works", false);
            break;
    }
}

void SecondPull(string &in asParent, string &in asChild, int alState)
{
    AddEntityCollideCallback("MovingBook_3", "MovingArea_3", "FourthPull", true, 1);
    AddDebugMessage("CASE NUMBER TWO WORKS", false);
}

void ThirdPull(string &in asParent, string &in asChild, int alState)
{
    AddEntityCollideCallback("MovingBook_2", "MovingArea_2", "FifthPull", true, 1);
    AddDebugMessage("CASE NUMBER THREE WORKS", false);
}

void FourthPull(string &in asParent, string &in asChild, int alState)
{
    AddDebugMessage("CASE NUMBER TWO OUTCOME WORKS", false);
}

void FifthPull(string &in asParent, string &in asChild, int alState)
{
    AddDebugMessage("CASE NUMBER THREE OUTCOME WORKS", false);
}
///---BOOK PUZZLE SCRIPT---/// 


Any help is appreciated.