Index: trunk/ippTasks/diff.pro
===================================================================
--- trunk/ippTasks/diff.pro	(revision 26567)
+++ trunk/ippTasks/diff.pro	(revision 26889)
@@ -157,4 +157,5 @@
     book getword diffSkyfile $pageName state -var RUN_STATE
     book getword diffSkyfile $pageName dbname -var DBNAME
+    book getword diffSkyfile $pageName reduction -var REDUCTION
 
     # set the host and workdir based on the skycell hash
@@ -175,4 +176,7 @@
     if ("$BOTHWAYS" == "T")
        $run = $run --inverse
+    end
+    if ("$REDUCTION" != "NULL")
+      $run = $run --reduction $REDUCTION
     end
     add_standard_args run