Hi Simon,

Yes, you can show and hide fields based on input of another field. This is known as Skip Logic or Conditional logic.

A good code example can be found here:

https://www.labkey.org/home/Documentation/wiki-page.view?name=questionMetadata

Can you provide me with more information on your second question? Where is this Primary Key going to be on? Is it the Schema and Query you're tying to the Survey or is it for the Survey Answers?

Regards,

Jon