Report with external image (URL from DB)

Hi,

I'm learning PDI and PRD.

I want to put an external image in one report. I read the path of this image with the Report Wizard. I have this data:



My image path is 'poster'.

I want to use this path and add an image to my report. If I add an image and put a path like this 'http://www.pentaho.com/images/pentaho_logo.png' it works, but I want to use the path that I've read from my database.

How can achieve this??

Thanks!