This is my attempt, can you please tell me where I have gone wrong. I get Eval Error: Cannot convert to geometry. I would like to fill the circle with a color as well please. CASE WHEN "planeType" = 'FAULT' THEN make_circle ( 10,10) END Kind Regards Dave -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html