Display # in selection screen of Query

HI Expert ,

When i execute Bex Query on selection screen i have Cal Month/Year  object in Variable . When i try to select value it will display all values except #.

in Data Provider when is display data i am able to see # . Please let me know how i can get # as selection parameter in my Variable screen .Any changes required at Query level.

Remember when i type # it will take and work fine.

Thanks ,

GB