=== modified file 'dhis-2/dhis-services/dhis-service-administration/src/main/java/org/hisp/dhis/databrowser/util/DataBrowserUtils.java'
--- dhis-2/dhis-services/dhis-service-administration/src/main/java/org/hisp/dhis/databrowser/util/DataBrowserUtils.java	2011-03-14 09:16:45 +0000
+++ dhis-2/dhis-services/dhis-service-administration/src/main/java/org/hisp/dhis/databrowser/util/DataBrowserUtils.java	2011-04-12 13:46:30 +0000
@@ -244,7 +244,10 @@
     }
 
     private static String checkValue( String value, boolean isZeroAdded )
-    {
+    {   if  ( value == null )
+        {
+            return "null";
+        }
         return (value.equals( "0" ) && !isZeroAdded) ? "" : value;
     }
 }