Index: openacs-4/packages/xolp/tcl/xolp-indicator-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xolp/tcl/xolp-indicator-procs.tcl,v
diff -u -r1.4 -r1.5
--- openacs-4/packages/xolp/tcl/xolp-indicator-procs.tcl	25 Apr 2018 19:47:48 -0000	1.4
+++ openacs-4/packages/xolp/tcl/xolp-indicator-procs.tcl	9 May 2018 15:33:33 -0000	1.5
@@ -199,8 +199,8 @@
       }
     }
     set sql ""
-    set dimensions {}
-    set where_clause {}
+    set dimensions [list]
+    set where_clause [list]
     # Dimension: Activities
     if {$activity_iris ne ""} {
       set dimension_table "xolp_activity_dimension"