Conditional formatting for the Key figure

Hi,

I need to do the conditional formatting for the KF.

Example: if KF value is between 0 and 5 , I need one colour, 6 to 10 other colour, 10 to 20 another colour..

I have tried EPM formatting by selecting conditional formatting, but it's taking only cell reference not KF reference.

Please suggest the process.

Thanks,Venu