go to Document Properties and add a Field Event Trigger to the one field you will make the selection in.
ExtractDate --> OnSelect Add Actions --> Under "Selection", add a "Select in field" trigger (You will need TWO):
- one trigger with the parameters Field=SFExtractDate, Search String='=ExtractDate'
(make sure to get the Equal sign in the Search field.
- the other trigger with Field=LIExtractDate, Search String='=ExtractDate'
now selections will be made in all three fields when making a selection in ExtractDate.
This should be what you are looking for, let me know if you need more help.