Its a lot of error in the position for variable star in your
software ,GCVS and NSV, because of to old catalogues.
New and better catalog is for downloading at:
http://www.sai.msu.su/groups/cluster/gcvs/gcvs/

Is it possible to get a update or can i add it myself?

Regards
HG.Lindberg/saaf/v
gorlin@...