problem using expression for external graphics url

Description

I want to choose different external images depending on some property. Using this kind of expression I was able to set values for fill, stroke and so on. Somehow I am not able to do this with an external graphics,

 

 

Environment

None

Status

Assignee

Unassigned

Reporter

Tobias Warneke

Triage

None

Fix versions

None

Affects versions

Components

Priority

Medium
Configure