Combo Box Description

Hi, I am trying to get the description from a combo box based on a BAQ dynamic list written into an editor field.

My code is:

Inputs.cmbPartDesc.Value = Inputs.txtBaseTrackA.Value;
Inputs.ed_WallA.Value = Inputs.cmbPartDesc.Description;

I have tried this with and without the dynamic list refresh and it doesn’s seem to need it as the description appears in the combo box, I just can’t get it to write to the editor field.

I presume I am missing something obvious but can’t work it out!