[Caetan0]

Thank you my friend, What I am "trying" to do is check one of conquest and if the player in my guild has this achievement it will be promoted to the rank 9.

        if rank >= 9 then
            if level == 85 and completed == GetAchievementInfo(399) then
                if reallyPromote then
                    SetGuildMemberRank(i, 9)
                end
            end
        end

In case, the guild member is promoted only if it has completed the conquest of "Just the Two of Us: 1550." The code is right?