Override default Style of the AccordionButton When Expanded

Feb 28, 2014 at 10:10 PM
Hi guys,

I'm using the Accordion Control on my project and I'm trying to apply my own style.
The problem is when i try to change the Background for the AccordionButton "ExpandedBackground", i always end up with the default style !!
Anyone Faces this issue or have any idea ?

Thank you.