Help-instance name->array element,array element->instance name

1

help. I need help!
i got a problem here, i have some movie clip on the stage, and when i click on it, it will save one variable, _global.array1=new Array(“a”);
a is the instance name, which other function will use this element on other button.
But when i click on other button, how it can link this element to trigger the instance?

thanks!
(i’m using Mx2004.)