dont work( what's wrong here?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using InfinityScript;

namespace skroll
{
   public class ScrollZ : BaseScript
   {
       public ScrollZ()
           : base()
       {
           //changeGametype("QCZM");
           Call("setdvar", "motd", "Welcome to Server!.");
       }
                private void createServerHud()
       {
           HudElem motd = HudElem.CreateServerFontString("boldFont", 1f);
           motd.SetPoint("CENTER", "BOTTOM", 0, -19);
           motd.Foreground = true;
           motd.HideWhenInMenu = true;
           OnInterval(25000, () =>
           {
               motd.SetText(Call("getdvar", "motd"));
               motd.SetPoint("CENTER", "BOTTOM", 1100, -10);
               motd.Call("moveovertime", 25);
               motd.X = -700;
               return true;
           });
                }
   }
}

//changeGametype("QCZM");

...

Anyway do you even put a text on playerconnect or player spawned.

Also learn some C# you have absolutely no idea of what you're doing. You're just copying our code and trying to use it for your own mod which fails really hard.

What DUKIP said.

Maybe check out some basic C# tutorials on youtube, I am sure you can find some.

dont work(

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using InfinityScript;

namespace skroll
{
   public class ScrollZ : BaseScript
   {
       public ScrollZ()
           : base()
       {
           PlayerConnected += new Action(entity =>
           {
                   Call("setdvar", "motd", "Welcome to Server!.");
               });
           }
       private void createServerHud()
       {
           HudElem motd = HudElem.CreateServerFontString("boldFont", 1f);
           motd.SetPoint("CENTER", "BOTTOM", 0, -19);
           motd.Foreground = true;
           motd.HideWhenInMenu = true;
           OnInterval(25000, () =>
           {
               motd.SetText(Call("getdvar", "motd"));
               motd.SetPoint("CENTER", "BOTTOM", 1100, -10);
               motd.Call("moveovertime", 25);
               motd.X = -700;
               return true;
           });
               }
   }
}

dont work(

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using InfinityScript;

namespace skroll
{
   public class ScrollZ : BaseScript
   {
       public ScrollZ()
           : base()
       {
           PlayerConnected += new Action(entity =>
           {
                   Call("setdvar", "motd", "Welcome to Server!.");
               });
           }
       private void createServerHud()
       {
           HudElem motd = HudElem.CreateServerFontString("boldFont", 1f);
           motd.SetPoint("CENTER", "BOTTOM", 0, -19);
           motd.Foreground = true;
           motd.HideWhenInMenu = true;
           OnInterval(25000, () =>
           {
               motd.SetText(Call("getdvar", "motd"));
               motd.SetPoint("CENTER", "BOTTOM", 1100, -10);
               motd.Call("moveovertime", 25);
               motd.X = -700;
               return true;
           });
               }
   }
}

You do realize that you're setting a dvar not a text for the HudElem "motd". There's a dvar for motd by the way.

It doesn't matter what you tell him, he does not understand anything you're saying. He's using google translate to write his message, he just expects a working code.