Index: openacs-4/packages/evaluation/lib/student-grades-report-chunk.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/evaluation/lib/student-grades-report-chunk.tcl,v
diff -u -r1.7 -r1.8
--- openacs-4/packages/evaluation/lib/student-grades-report-chunk.tcl	27 Oct 2014 16:41:24 -0000	1.7
+++ openacs-4/packages/evaluation/lib/student-grades-report-chunk.tcl	28 Jun 2015 12:28:50 -0000	1.8
@@ -9,7 +9,7 @@
 set base_url [ad_conn package_url]
 
 set mode display
-set return_url "[ad_conn url]?[export_vars { grade_id }]"
+set return_url [export_vars -base [ad_conn url] { grade_id }]
 
 db_1row grade_info { *SQL* }