Programming a Combobox to call movie clips and change properties

Hi, I´m a Flash newbie and I need some help for a project I´m making. I have a dialogue box with a ComboBox labeled as “square”, “circle”, “triangle”, and “rectangle”, which are supposed to call movie clips (they have the same instance name as the labels). What I want is that the ComboBox selects any of these movie clips and get their size and position properties through input textboxes, and also have the chance to rearrange the properties by changing the values on the input textboxes (sort of like the property inspector in Flash).

I was looking for any tutorial that looks like what I´m looking for, but I didn´t find anything. I´m not even sure if a ComboBox can be used to call a movie clip on stage. I hope anyone can help me out.