AutoCAD .NET :: Adding Center Aligned Attribute To Drawing

I am adding a center aligned attribute to a drawing that is not open in the autocad editor. the alignment works if i call the function from the main thread like this.
 
[CommandMethod("center")]public void Add() { Do.AddAttribute(); }

But if the method is executed on another thread (which it is when handling a msmq message) then the attribute is added but the alignment doesn't display even though the property is set (and can be verified in the attribute editor). 

private void OnReceiveCompleted(object sender, ReceiveCompletedEventArgs e) { Do.AddAttribute();}

How can i get the attribute alignment to work in another thread?

code is below:

public class Do { public static void AddAttribute() { var path = @"c:WAM444B4-002.dwg";
using (var database = new Database(false, true)) {
database.ReadDwgFile(path, FileShare.ReadWrite, false, password: "");
Transaction transaction = null; try {

[Code] ......