Question on how to use a variable in report object's horizontal formula to shift back and forth at refresh interval.

Hello All;
I have an SSRS Report that displays some slider objects. The report auto-refreshes every 5 minutes.
This report is displayed on a big screen TV and I want to shift the images back and forth every time it refreshes to prevent possible burn-in on the screen.
I see you can use a formula on the Horizontal position of objects, and I think a variable that gets added 10 and then subtracted by 10 every refresh could be used to display the objects in different positions each iteration, but I don't know how to do that
in SSRS. I have read up on variables, and I think I need a global variable, but not sure how to update it on each refresh iteration.
I read the links on using Silverlight to shift things, but that adds a whole other level of complexity.
I could even do something in the DB and then pull that into the formula field if needed.
Thanks in advance.
George Hicks

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Question on how to use a variable in report object's horizontal formula to shift back and forth at refresh interval.

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