Changing class button doesn't work in fretta

[Sylerr]

So when i press Change Class on the F1 menu of fretta nothing happens, i don't have any clue why. I made 2 classes but i can't switch between them.

Help any one?

this is my code:

 if ( IsValid( LocalPlayer() ) ) then
               
                        local TeamID = LocalPlayer():Team()
                        local Classes = team.GetClass( TeamID )
                        if ( Classes && #Classes > 1 ) then
                                local btn = Help:AddSelectButton( "Change Class", function() GAMEMODE:ShowClassChooser( LocalPlayer():Team() ) end )
                                btn.m_colBackground = Color( 120, 255, 100 )
                        end
               
                end

if ( !GAMEMODE.TeamBased ) then return end
 
	team.SetUp( TEAM_1, "Team 1", Color( 50, 255, 50 ), true )
	team.SetSpawnPoint( TEAM_1, { "info_player_counterterrorist" } )
	team.SetClass( TEAM_1, { "Class A", "Class B" } ) // "Human" is the class we want players to use

class_a.lua

local CLASS = {}
 
CLASS.DisplayName			= "Class A"
CLASS.WalkSpeed 			= 400
CLASS.CrouchedWalkSpeed 		= 0.2
CLASS.RunSpeed				= 600
CLASS.DuckSpeed				= 0.2
CLASS.JumpPower				= 200
CLASS.PlayerModel			= "models/player/ct_gsg9"
CLASS.DrawTeamRing			= true
CLASS.DrawViewModel			= true
CLASS.CanUseFlashlight      		= true
CLASS.MaxHealth				= 100
CLASS.StartHealth			= 100
CLASS.StartArmor			= 0
CLASS.RespawnTime           		= 0 // 0 means use the default spawn time chosen by gamemode
CLASS.DropWeaponOnDie			= false
CLASS.TeammateNoCollide 		= false
CLASS.AvoidPlayers			= false // Automatically avoid players that we're no colliding
CLASS.Selectable			= true // When false, this disables all the team checking
CLASS.FullRotation			= false // Allow the player's model to rotate upwards, etc etc
 
function CLASS:Loadout( pl )
 

 
end

function CLASS:OnSpawn( pl )
end
 
function CLASS:OnDeath( pl, attacker, dmginfo )
end
 
function CLASS:Think( pl )
end
 
function CLASS:Move( pl, mv )
end
 
function CLASS:OnKeyPress( pl, key )
end
 
function CLASS:OnKeyRelease( pl, key )
end
 
function CLASS:ShouldDrawLocalPlayer( pl )
	return false
end
 
function CLASS:CalcView( ply, origin, angles, fov )
end
 
player_class.Register( "Class A", CLASS )

class_b.lua

local CLASS = {}
 
CLASS.DisplayName			= "Class B"
CLASS.WalkSpeed 			= 400
CLASS.CrouchedWalkSpeed 		= 0.2
CLASS.RunSpeed				= 600
CLASS.DuckSpeed				= 0.2
CLASS.JumpPower				= 200
CLASS.PlayerModel			= "models/player/ct_gsg9"
CLASS.DrawTeamRing			= true
CLASS.DrawViewModel			= true
CLASS.CanUseFlashlight      		= true
CLASS.MaxHealth				= 100
CLASS.StartHealth			= 100
CLASS.StartArmor			= 0
CLASS.RespawnTime           		= 0 // 0 means use the default spawn time chosen by gamemode
CLASS.DropWeaponOnDie			= false
CLASS.TeammateNoCollide 		= false
CLASS.AvoidPlayers			= false // Automatically avoid players that we're no colliding
CLASS.Selectable			= true // When false, this disables all the team checking
CLASS.FullRotation			= false // Allow the player's model to rotate upwards, etc etc
 
function CLASS:Loadout( pl )
 

 
end

function CLASS:OnSpawn( pl )
end
 
function CLASS:OnDeath( pl, attacker, dmginfo )
end
 
function CLASS:Think( pl )
end
 
function CLASS:Move( pl, mv )
end
 
function CLASS:OnKeyPress( pl, key )
end
 
function CLASS:OnKeyRelease( pl, key )
end
 
function CLASS:ShouldDrawLocalPlayer( pl )
	return false
end
 
function CLASS:CalcView( ply, origin, angles, fov )
end
 
player_class.Register( "Class B", CLASS )