Flung ball leaving trail

I am creating a basic app with a ball that is flung around the screen. Is there any way to make the ball leave a trail of color behind? Like the ball draws a line while it moves randomly around the screen.

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Yes, see the attachment. 

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It didnt work

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I tried that. Here's a screenshot.

What it did was leave one big box of paint behind. It did not leave a continuous trail.

I tried it as a procedure, too, and that didn't work either. 

Any ideas?

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You need to save the current x and y in variables called Prev_x and Prev_y.
Then everytime the ball is moved, draw a line from Prev_x, Prev_y to the current x and y of the ball. After the line is drawn, repeat (save x and y, etc.)

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Thanks for the suggestion! I tried that and made it with a procedure - see my screenshot.

The problem is, it still only draws little lines every time I fling the ball.

How do I save in order to repeat as you suggested?

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The x,y saving and the drawing needs to be done inside a Clock.Timer event, set that timer to enabled when the ball is flung. Set the clock to 100 ms or anything that works for you.

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