diff -r b9dd84d35128 -r 0cdf3652748d src/pyams_portal/zmi/templates/renderer-input.pt
--- a/src/pyams_portal/zmi/templates/renderer-input.pt	Mon Jul 09 11:43:13 2018 +0200
+++ b/src/pyams_portal/zmi/templates/renderer-input.pt	Mon Jul 09 13:42:42 2018 +0200
@@ -4,7 +4,7 @@
 			title="Edit renderer properties" i18n:attributes="title"
 			data-ams-hint-gravity="se" data-toggle="modal"
 			tal:condition="render"
-			tal:attributes="data-ams-url extension:absolute_url(context, 'renderer-properties.html');"></i>
+			tal:attributes="data-ams-url tales:absolute_url(context, 'renderer-properties.html');"></i>
 		<i class="icon-append fa fa-fw fa-pencil-square-o opacity-25"
 			tal:condition="not:render"></i>
 	</tal:var>
@@ -33,7 +33,7 @@
 								onchange view/onchange;
 								multiple view/multiple;
 								size view/size;
-								data-ams-data extension:object_data(view);'>
+								data-ams-data tales:object_data(view);'>
 			<option tal:repeat="entry view/items"
 					tal:attributes="value entry/value;
 									selected python:entry['value'] in view.value;"