Could you just map the image library as a datasource, and then query the
datasource for the image name before setting the image field to that URL?
If the list comes back with no image with that name, just set the image URL to
some placeholder image.
From: ozmo
This is using 2007?
I did a similar thing recently in 2013, however it was a rule based on when a
field was populated, when the url for the image was incorrect, it would just
show a broken icon.
Can you set a condition on the button to only execute the rule if LOGO is not
blank.
From: ozmoss-