Conditional Formating is GONE after click refresh on a Pivot table

Hello everyone,

I have a pivot table that I am trying to apply some format where Enabled=GREEN and Disable=RED. works fine for the first time but once I refresh the Pivot data the formating is gone!

21-10-2014 17-02-47.png

The screenshot of the before and after refresh;

21-10-2014 17-07-02.png

Thank you all in advance