Update Record - bindings

Jason, am I going mad. This form I'm building has opened a can of worms. Just when I thought it was finished, more problems arise on testing - it's a marathon - I'm going daft.
Okay calm down!!!

Some background: Firstly I ran DataAssist Pages, just to see the code behind a CRUD system. As a result I have two questions.

1. How did you bind the Insert and Update page.

Update Page
The code used in email is <?php echo((isset($_GET["invalid"])?ValidatedField("usersupdate","UserEmail"):"".$row_WADAusers["UserEmail"]."")); ?>


Insert Page
The code used in userfirstname is <?php echo((isset($_GET["invalid"])?ValidatedField("usersinsert","UserFirstName"):"")); ?>



Where did this code come from - there is all sort of stuff in there - I've tried to bind using everything I can see on the bindings page - see my attached pdf - but nothing comes close to entering this robust code

It's driving me mad - almost!!!