Programmatically set the ribbon dropdown's value using Accessibility interface

Hi,

I know there is no direct way to set a ribbon dropdown control's(PowerPoint) value. Saw a few post regarding Accessibility and it seems like it is possible to read the control's selected value.

I just wanted to know whether is there any way to set/change the selected value programmatically? accset_Value doesnt seem to work?

reference url: http://social.msdn.microsoft.com/Forums/en-US/officegeneral/thread/8df1014d-c0c9-4ce5-ad76-cf81455b8f3c