Addin - dynamic toolbar BMPs

I want to create an Addin that creates a dynamic toolbar which is easy to update from a remote location for many users.  This mean that I do not want to use embedded icons for the toolbar.

I there a way, within an addin,  to add images to a toolbar that are not embedded within the addin itself?

This does not work, but I am sure you know that...

cmdGroup.LargeIconList =

"C:\...\MyImage.bmp"

cmdGroup.SmallIconList = "C:\...\MyImage.bmp"

cmdGroup.LargeMainIcon =

"C:\...\MyImage.bmp"

cmdGroup.SmallMainIcon = "C:\...\MyImage.bmp"

Please advise.

SolidworksApi macros