Sorry, just re-read your post, and will correct my answer:
Assuming you would load an external movie, set the variable with:
_level0.selected_state = "Kansas";
Then from the loaded movie you would refer to this variable in the same manner:
If you wanted to display the state selected in a text field, you would then name the variable in the text box:
_level0.selected_state
If you wanted to send this loaded movie to a particular frame depending on the state selected, you could use a serie of if and/or elses:
if(_level0.selected_state == "Kansas"

{
_root.gotoAndPlay("labeled_frame"

;
} else {
do something else...
}
Note: in this case _root refers to main timeline in the loaded movie and not the main timeline of the map movie which is on level 0.
ldnewbie