Start the Expression Builder in a property sheet or the Macro window

1. Click the property or argument box that will contain the expression.
   
   
2. Click the Build button next to the property or argument box.

   If a property has more than one builder associated with it, Microsoft Access displays the Choose Builder dialog box. Click Expression Builder and click OK.

Note   If the property box or argument box where you start the Expression Builder already contains a value, that value is automatically copied into the expression box.