Load CF standard database field user_id with logged in user

I found the tutorial, "How to store and load user's data". I added the PHP string to the DB Read action in the "On Load" event before the render action is called.

Here is the code I added to the condition field on the DB Read action from the tutorial.

<?php
$user = JFactory::getUser();
return array("user_id" => $user->get("id"));
?>

(I added the closing php)

According to the HowTo, I think all I needed to do was set "Enable Mode(l) ID" to No and copy the text above into the condition field.
[attachment=0]Screen Shot 2015-03-01 at 10.09.23 AM.png[/attachment]
[attachment=1]Screen Shot 2015-03-01 at 10.09.47 AM.png[/attachment]

On the form, I added a text field to show the "user_id" so I can verify the value, eventually I'll make it a hidden field. I make sure that I'm logged in and when I open the form, the "user_id" field id blank.

What am I missing?

thanks,
Mike

Thanks Bob,

That was an easy fix.