Unable to control storyboard from from another wpf window

I have 2 wpf windows .

1. in which i draw a canvas , create storyboard and play that storybooard

2. this is basically a controller via which i want to control the pause and play functions of the story board .

The problem is that in order to acess the storyboard from the 2nd class i have to create an object of the first class in which the storyboard is declared which is not possible because , i am calling several methods from the constructor of that class

i am goiving the code   below

class 1

 public partial class Template1 : Window
    {
//   lots of  variables
        Storyboard animationStoryboard = new Storyboard();

 public Template1()
        {
            InitializeComponent();
        }

     

   public Template1(MainWindow main)
        {
                        InitializeComponent();
            
Method1();
method2();
//......
       }

// various other methods for adding animations to the story board

class 2

public partial class Window2 : Window
    {
        public Window2()
        {
            InitializeComponent();
        }
        private void Image_MouseDown_1(object sender, MouseButtonEventArgs e)
        {
            Template1 t1 = new Template1();
            t1.animationstoryboard.pause();
        }
    }

i have tried several ways to over the problem

1. i have declared storyboard object to be static

2.  i have provided a blank contructor and created the object of the template 1 class ..

However the following error is always   showed

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arka Bhattacharya