[fl8] Changing where sprites are shown

How do you change the location where bitmap data sprites are being drawn? That is, without changing the position of the movieclip it’s attached to

Right now, I’m able to load images just fine and put them on the screen, but when I use mc_player._xscale=-100, the bitmap makes a big flip because the origin is at the top left (and not the center).

The bitmap data is called evDraw.