Modify An Instance's Propriety Directly In Flash (not In Actionscript)

If i create a movieclip named player and in this class there is the proprety map
(a string) and level(an int); I would like to know if there is a way of modifying these propreties without actionscript when i create an instance of that symbol. For exemple, like you would modify the height and the width of a movieclip in flash(the program, not actionscript), but modify this instance's map and level proprieties instead