BEx Variable Input Parameter

Hi everybody,

I am doing a BEx report and I have created User Exit variables and Text Variables based on InfoObjects that exists in the InfoCube. But I am needing a Globla Variable, that is not related to the InfoObjects in the InfoCube; depending of the values of this variable, some claculated key figures will have a diferent behaviour.

Please, how can I create a variable of this type? is it possible in Bex? if not, any suggestions?

Thanks and Regards,

Luis Jorge Castro