Code not running


I have a workspace here:

And In Canvas.js, I have this code:
//Scale to 200% on both axis’
//Draw a rectangle
myCanvas.rect(12, 415, 100, 50);
//Scale to 200% on the x axis. Keep the y axis at 100%
myCanvas.scale(200, 100);
//Draw the same rectangle on a different x offset
myCanvas.rect(86, 415, 100, 50);
//Scale 25% on the x axis and 50% on the y axis to reset the dimensions.
myCanvas.scale(25, 50);

that seems not to run at all. The thing is, code that I put after that will run, and the code was running last time I opened up my project through Main.html. Nothing has changed since then. Can you help me?