Screen flashes during VBA execution - does it happen in Office 2013?

Hello - I was hoping for a little help. I have a piece of code in a macro that when I run it causes my screen to briefly flash, which I do not want (as I have to execute it once a second as part of a more complex setup.) Could anyone with Office 2013 please help me by telling me if the macro provided below causes the flash in their setups, as I don't have that version - and would need to change machines to install it (which I will do if needs be but need to know first.) Many thanks.

Edit: Setting screen update to false does not fix the problem

The code is as follows:

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Set the application.screenupdating property to false at the top of the code, and then back to true at the bottom.

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Post the code you're using?