Hi Gautam,
In our case the "variant" is used to present special screen layout. Our workarounnd is to have a SAP backend guy to modify the GUI and create a new value for the field of "Layout". When I want to land to the special GUI, instead of selecting the variant from the list, I can simply fill special value into the field of "Layout". But if you have a lot of variants, this may not be proper for your case.
Br,
Dong