STEP 11: Our area_display is not updating to display our new area! We need to fix that.

• In the LOGIC tab, click on and drop Update Display inside the move_mouse block.
• Change the variable name before .update() from my_display to rect_display.
• Change the variable argument in parentheses from my_var to rect_area.

Click Run and notice how the area display updates as you move your mouse!

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