Article Writing

 void visualizacion()
        {
            Storyboard famarilla = (Storyboard)this.FindResource("flechaupa");
            Storyboard fverde = (Storyboard)this.FindResource("flecharaia");
            Storyboard fazul = (Storyboard)this.FindResource("flechalefta");
            Storyboard fmorada = (Storyboard)this.FindResource("flechaduwa");



            for (i = 0; i <= datosecon-1; i++)
            {

 //fverde.Remove();
 //         fmorada.Remove();
 //     fazul.Remove();
 //        famarilla.Remove();

                if (ListaN[i] == 1)
                {               
                    famarilla.Begin();
                }
                else if (ListaN[i] == 2)
                {                   
                    fverde.Begin();
                }

                else if (ListaN[i] == 3)
                {                  
                    fmorada.Begin();
                }
                else if (ListaN[i] == 4)
                {              
                    fazul.Begin();
                }
            }
        }



the problem is when I "start"; button storyboarding if both active dotos

I have already attempted to delays but does not work