Please help~ change images for frame window dynamically

[phoenixy]

Hi,
I want to change 9 images used in frame window dynamically.
Currently, it is fixed in Look'n'Feel, and there seems to be no way to set it programmatically (or using layout XML)

Even I modify the look'n'feel file, there seems to be no way to set images for frame border, because images for frame need "type" attribute.

To set some image property dynamically, I have to use PropertyDefinition + ImageProperty in the looknfeel xml file.

However, images for FrameComponent requires "type" attribute, which isn't attribute of ImageProperty.

Should I hack CeGUI to make it parsable in falagard?