How to show image from within a symbol

Howdy,

EA, Win7

I've imported an img on to my stage, converted it to a symbol (and unchecked autoplay).

Then I deleted the img from the stage, the symbol w/img still remains in the Assets > Symbols section.

What I want to do now is simply have the img (that's inside the symbol) appear when I click on a button/text.

Is this possible? I've tried...

sym.getSymbol("image").show();       where "image" is the name of the symbol

but this doesn't work. What am I missing?

Thanks for any help,

R