Upload zone on top of custom text.

 We have a cover page for a calendar that we wish to allow customers to add both images and text. We have a base layer with a transparent Upload Zone above it.

If the customer Adds Text before putting and image in the Upload zone, the text will be placed underneath the Upload zone layer, causing it to be unselectable and un-editable.

If it's done the other way round (image first), it works OK, the text gets placed in front of the uploaded image.

I've tried to change the layer for Custom text (was -1) in Individual Product Settings to 0 or 1 or 2 with no difference.

Is there a way of always having the custom text on top without replaing the Upload Zone or would this just cause the reverse problem?

Thanks
Luca