pixie editor : upload files from Media directory

Hello ! I use pixie editor as a template creator, I edit a background image in which I will create text boxes and add an image of a product. But we could not import images from the Media but only load from the computer. It would be nice if we could uplaod images files already presents in the Media directory (like the Media button in Show Editor), it would save time and be able to easily change image if necessary.