saving settings question

[AMP]

Hello,
I have a Settings.settin gs file in my project where I put a
name=FileforUpl oad, type=string and Scope as user. the Value is a path
to a file

In my code I have.
Properties.Sett ings.Default["FileforUpl oad"] = UploadedFileNam e;
UploadedFileNam e gets its name from a opendialog box so we can save the
last path.

This code does not save anything.

I also have a Settings.design er.cs tha has the following:
public static Settings Default {
get {
return defaultInstance ;
........
.........
}
public string FileforUpload {
get {
return ((string)(this["FileforUpl oad"]));
}
set {
this["FileforUpl oad"] = value;
}

But when I step through it it never runs the "set" when I try to change
it to the value of UploadedFileNam e.

Help
Thanks
Mike.