How do you curve a motion tween in Adobe Flash cs4?

I have a tween of a stick figure moving straight, and I want to make him jumping. How can I change his motion tween so that it does this? I want to make it curved a bit.How do you curve a motion tween in Adobe Flash cs4?Tweens can't do this as far as I know, you'll just have to draw 50 frames on your own.

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