servergroupaddperm not working as expected

Hello,

I removed a grant permission from the server admin group by mistake and i'm trying to add it manually via query login.
I login successfully, chose the virtualserver ID and execute the following commands:

servergroupaddperm sgid=6 permid=84 permvalue=75 permnegated=0 permskip=0
or
servergroupaddperm sgid=6 permsid=b_channel_create_permanent permvalue=75 permnegated=0 permskip=0

I get error id=0 msg=ok but it doesn't change?
Any ideas?

servergroupaddperm not working as expected