This Month - This Year expression

Hi,

I need to setup an expression (which will colour some numbers) according to whether the numbers are earlier than what the time dimension is showing for each line - fx.

200908            10.000,-

200912            20.000,-

201409            10.000,-    (this should be colour - as the number is in the current month - current year))

I know how to setup an expression in the font - but I can't figure out how to setup up the expression for current month, current year - when my time dimension is structured as follow (from a SSAS cube):