How do you display multiple lines on LCD from Groupslist?

i have made a simple script to display Blockgroups. only now i see the last name at the firstline
--- Automerge ---
public Program(){ }
//Define area Variants and Statics
//int ALSGROUPcount = 0;
const string SystemName = "ALS";
static float FONT_SIZE = 1.5F;
string nl = "\r\n";

public void Main(){
List <IMyBlockGroup> ALLgr = new List<IMyBlockGroup>();//Declare ALL Groups
GridTerminalSystem.GetBlockGroups(ALLgr);//Get ALL Groups
foreach...

How do you display multiple lines on LCD from Groupslist?