Index: openacs-4/packages/boomerang/tcl/boomerang-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/boomerang/tcl/boomerang-procs.tcl,v
diff -u -r1.11 -r1.12
--- openacs-4/packages/boomerang/tcl/boomerang-procs.tcl	2 Feb 2018 08:21:31 -0000	1.11
+++ openacs-4/packages/boomerang/tcl/boomerang-procs.tcl	29 Mar 2018 22:49:53 -0000	1.12
@@ -139,8 +139,8 @@
             #xotcl::Object log "boomerang::record start"
 
             set entries [ns_set array $ns_set]
-            
-            if {[ns_set size $ns_set] < 1 || ![dict exist $entries u]} {
+
+            if {[ns_set size $ns_set] < 1 || ![dict exists $entries u]} {
                 ns_log notice "boomerang: no (valid) measurement variablables are provided"
                 return
             }