TMSFNCDataBinder binding TListbox vs TMSFNCListBox

I can´t get this to work:

// clears the listbox + displays no data
TMSFNCDataBinder1.ConnectList(TMSFNCListBox1,DataSource1,'Items', 'Zuname');

// works as expected
TMSFNCDataBinder1.ConnectList(ListBox1,DataSource1,'Items','Zuname');

Using the long version of ConnectList works for TMSFNCListBox too.

What am I missing?

Bernd

It's a bit more complex

TMSFNCDataBinder1.ConnectList(TMSFNCListBox1,DataSource1,'Items', ['Text'], ['Category']);

Items is a collection with a Text property for each item, in TListBox it's a TStringList and therefore handled differently