Remote Command Error - command must be a tag

commandtoserver('JoinTeam', %teamid);

function serverCmdJoinTeam(%client, %teamid)
{
  Game.joinTeam(%teamid);
}

function TDMGame::joinTeam(%game, %this, %teamid)
{
   
   //We only have 2 teams so if team is greater than 2 or less than 0 its invalid.
   if (%teamid > 2 || %teamid < 0) 
      return false;
   //If we already are on that team return. 
   if (%teamid == %this.team.teamId)
      return false;

   %this.leaveTeam();

   if (%teamid == 1)
      %this.team = $Team1; 
   if (%teamid == 2)
      %this.team = $Team2;
   
   MessageAll('MsgClientJoinTeam', '\c2%1 joined the %2 side',
      %this.name,
      %this.team.name,
      %this.team.teamId,
      %this,
      %this.sendGuid,
      %this.score,
      // %this.isAiControlled(),
      %this.isAdmin,
      %this.isSuperAdmin);
      
      echo("JoinTeamThis=" @ %client);
      
    TDMGame::spawnPlayer();
}