Icon in table

Hi, I have a question regarding icons in a table ui element.

I would like to show the user different icons depending some conditions and it's almost working.

I have added a status field binded to a field of lengh char255 of type image in the table to display the icon.

For the context node I am using a supply function to fill the table. In order to get the correct values for the entries I am using the function ICON_CREATE depending the conditons for each row in the table. In debugging mode I can see the correct icons are set in the status field.

But when rendering the table, the status field is not filled with an icon, but with an empty icon field, a red cross. Anyone that understands how to correct the problem?

Thank you and regards Lena