Customizing the Data Assist detail.php page

Hello I have used Data Assist to revise the pages originally supplied as part of the Security Assist solution web and database. The database is the ubiquitous Blue Sky Music and all the product images and thumbnails are in the correct folders
I have followed the instructions in the Data Assist gsg and recreated the pages though instead of naming the pages items_*.php etc I named them prod_*2.php

In my case the items_detail.php page is therefore called prod_detail2.php

Search results works and I click the view (mag icon) to open the prod_details2.php
The issue is I cannot get the images to display on the prod_detail2.php page.
In the gsg is this info about binding the image.

Step 11. With the dynamic image selected, prepend the relative path to the Src value in the Property inspector. For our example, you would add images/detail/.

For my page prod_detail2.php in properties src = <?php echo $row_WADAitems['ItemImage']; ?>
The page code is <div id="WADAPageHeaderImageArea"> <img id="WADAPageHeaderImage" src="<?php echo $row_WADAitems['ItemImage']; ?>" alt="" />

I tried changing the Properties src value to images/detail/<?php echo $row_WADAitems['ItemImage']; ?> but that did not result in the image being displayed.

Viewing the content of the Tag Editor I can see the following
<img id="WADAPageHeaderImage" src="<?php echo $row_WADAitems['ItemImage']; ?>" alt="" />
where exactly do I insert images/detail/ as instructed please?
Thanks
Don