Dear expert,<br><br>When I tried to access <a href="http://myserver/chameleon/samples/sample_roi.phtml">http://myserver/chameleon/samples/sample_roi.phtml</a> on the chameleon sample. (using chameleon 2.2)<br>Everythings is ok until I tried to click on "Build Filter" on the tab tools, the popup error appeared with the message "There is no active layer selected. You must a layer inorder to use this tool". How to to activated the layer? Does anyone success access this sample above?
<br><br>If i would like to use expression builder, should I am working with WMS or WFS?<br><br>Thank you for your help.<br>Best Regards,<br>PSSDAL<br><br>