[scale/ morph shape in constructor]

I'm trying to create an infinitely beating heart using p5js and gsap.

I used constructor to make a shape and timeline to animate its size, though it doesn't work.

How can I animate the variable inside the constructor? Or can I morph between 2 shape made with constructor?

 

Thanks in advance.

 

 

 

 

See the Pen jOyXdNd by morphmorph (@morphmorph) on CodePen