hello everyone,
I am barely getting into flash and I've ran into a problem trying to make a classic wormhole effect.
What I want to portray are squares getting larger and larger toward me as if I'm traveling inwards.

what i have done so far is constructed a small square turned it into a symbol and put it in the center of the page. I then double clicked the symbol and used shape tween to expand it outward. This motion is exactly what i need, but now i need this shape tween to repeat every X amount seconds.

I know i have to go back to the scene and make an action script but i need some guidance in basic loops. I've looked around at different tutorials and have learned things but nothing to really pinpoint my issue.

can anyone guide or assist me in the right direction?

Thank you very much