Index: trunk/ippTasks/chip.pro
===================================================================
--- trunk/ippTasks/chip.pro	(revision 12369)
+++ trunk/ippTasks/chip.pro	(revision 12370)
@@ -135,5 +135,5 @@
 
     ## generate output log based on filerule
-    if ($WORKDIR == NULL)
+    if ("$WORKDIR" == "NULL")
       $outroot = `pwd`
     else
@@ -147,5 +147,5 @@
 
     $run = chip_imfile.pl --exp_id $EXP_ID --chip_id $CHIP_ID --class_id $CLASS_ID --uri $URI --camera $CAMERA $ARGS
-    if ($WORKDIR != NULL)
+    if ("$WORKDIR" != "NULL")
       $run = $run --workdir $outroot
     end