title: How to display .net automation add-in functions in excel's formula autocomplete
body: <p>I have an automation add-in written in c# that exposes some functions to be used as formulas in Excel.</p>
  
  <p>The formulas can be successfully used from an Excel sheet but they do not appear in Excel2007's formula autocomplete lists. </p>
  
  <p>i.e. If I want to use the function AddNums(x,y) within an excel sheet then I must know what the function is called or I can find the function in the function wizard. It would be nice to be able to start typing Add.. and then see the formulas beginning with Add displayed.</p>
  
  <p>Is this supported in Excel for automation add-ins? (I know it is for xlls).</p>