Ranks in Prop Hunt Scoreboard Not Showing Up?

[blackjackph]

As the title says, I'm trying to get ranks to show up on the scoreboard. This is what I've found so far:
\garrysmod\gamemodes\fretta\gamemode\cl_scores.lua
code
function GM:AddScoreboardRanks( ScoreBoard )
local f = function( ply ) return ply:IsUserGroup() end
ScoreBoard:AddColumn( "Rank", 50, f, 0.5, nil, 6, 6 )

end
/code
and
code
ScoreBoard:SetSkin( GAMEMODE.HudSkin )

self:AddScoreboardAvatar( ScoreBoard ) // 1
self:AddScoreboardWantsChange( ScoreBoard ) // 2
self:AddScoreboardName( ScoreBoard ) // 3
self:AddScoreboardRanks( ScoreBoard ) // 4
self:AddScoreboardKills( ScoreBoard ) // 5
self:AddScoreboardDeaths( ScoreBoard ) // 6
self:AddScoreboardPing( ScoreBoard ) // 7

// Here we sort by these columns (and descending), in this order. You can define up to 4
ScoreBoard:SetSortColumns( { 4, true, 5, false, 3, false } )

end

/code