promt order

Hi All,

I am having a promt in my universe whict promt a date in 'MON-YYYY' format now my problem is I want to sort this promt values so that end user must view values in order. for eg my current promt values are

MAY-2009

JAN-2009

MAR-2009

FEB-2009

I want my promt values should come as

JAN-2009

FEB-2009

MAR-2009

MAY-2009

Thanks and Regards

VD