setlines CONFUSION

[JohnnyChimpo]

This script isnt working, it is getting to onTabSelect function however just not setting the lines, not understanding why and looking for help yet again.

PHP Code:

this.serverName = "server";
this.lngArray = {"de","es","fr","it","ne","no","po","sw"};
this.lngNumber = 8;
this.fileArray = {null};
this.prevTab = 0;

function onActionServerside() {
  temp.filename = null;
  for (temp.i =0;i<lngNumber;++i){
    temp.filename.add("levels/translations/"@serverName@"_"@lngArray[i]@".po");
  }
  if ( params[0] == "loadfile" ) 
  {
    this.fileArray.lines ={null};
    for ( temp.i=0; i<lngNumber;++i){
      temp.lines = loadlines(temp.filename[i]);
      fileArray.add(temp.lines);
    }
    player.triggerclient("gui",this.name, "loaded", fileArray);
  }
  else if (params[0] == "save")
  {
    params[1].savelines(temp.filename, 0);
    player.triggerclient("gui",this.name, "saved");
  }
  
}

//#CLIENTSIDE
function onActionClientSide() {
  if ( params[0] == "loaded")
  {
   temp.lines = params[1];
   EditTextML.setlines(temp.lines[0]);
  }
  else if ( params[0] == "saved")
  {
    player.chat = _("SAVED");
  }
}

...THERE WAS MORE SCRIPT HERE....
    
    new GuiTabCtrl("Trans_Tabs") {
      profile = GuiBlueTabProfile;
      x = 10;
      y = 56;
      width = 480;
      height = 24;
      tabwidth = 70;
    
      clearrows();
      addrow(0,"Dutch");
      addrow(1,"Spanish");
      addrow(2,"French");
      addrow(3,"Italian");
      addrow(4,"Nederlands");
      addrow(5,"Norsk");
      addrow(6,"Portuges");
      addrow(7,"Svenska");
      setSelectedRow(0);
      thiso.catchevent(Trans_Tabs, "onSelect", "onTabSelect");
    }  


      new GuiMLTextEditCtrl("EditTextML") {
        profile = GuiBlueMLTextEditProfile;
        x = 10;
        y = 10;
        width = 480;
        height = 60;
          }
      }
  
....THERE WAS MORE SCRIPT HERE

//ACTIONS
function onTabSelect(){
  fileArray[prevTab] = EditTextML.getlines();
  prevTab = Trans_Tabs.getselectedid();
  EditTextML.setlines(fileArray[prevTab]);
}