[SOLVED] Spawn entity at certain time

quick question, if i wanted to make another 1 spawn at 15 seconds how would i do it, this code i used seems to not work.


var Spawner = pc.createScript('spawner');


// initialize code called once per entity
Spawner.prototype.initialize = function() {
    this.Spawner = 0;
    this.isSpawnerActive = false;
};

Spawner.prototype.beginSpawner = function(){
    this.isSpawnerActive = true;  
};

// update code called every frame
Spawner.prototype.update = function(dt) {
   
    
    this.Spawner += dt;
    
    if (this.Spawner > 5 && this.isSpawnerActive === false) {

        this.beginSpawner();

         var Monster1 = this.app.root.findByName('Monster1');
    this.F = Monster1.clone();
    Monster1.parent.addChild(this.F);
        this.F.rigidbody.teleport(-12, 1, -4);
        
        
    }
    
    if (this.Spawner > 15 && this.isSpawnerActive === false)  {
        
         this.beginSpawner();
    
        var Monster2 = this.app.root.findByName('Monster1');
        
       
        this.G = Monster2.clone();
        Monster2.parent.addChild(this.G);
        this.G.rigidbody.teleport(-12, 1, -4);
        
    }
    
};