=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/Grid.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/Grid.java	2013-03-04 10:30:59 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/Grid.java	2013-03-19 17:54:54 +0000
@@ -77,17 +77,17 @@
     /**
      * Returns map of meta-data.
      */
-    Map<Object, String> getMetaData();
+    Map<Object, Object> getMetaData();
     
     /**
      * Sets map of meta-data.
      */
-    void setMetaData( Map<Object, String> metaData );
+    void setMetaData( Map<Object, Object> metaData );
     
     /**
      * Adds a key-value pair to meta-data.
      */
-    void addMetaData( String key, String value );
+    void addMetaData( Object key, Object value );
     
     /**
      * Returns all visible headers, ie. headers which are not hidden.

=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java	2013-03-19 17:31:48 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java	2013-03-19 17:54:54 +0000
@@ -47,6 +47,7 @@
 import static org.hisp.dhis.analytics.DataQueryParams.getDimensionItemsFromParam;
 import static org.hisp.dhis.common.IdentifiableObjectUtils.asList;
 import static org.hisp.dhis.common.IdentifiableObjectUtils.asTypedList;
+import static org.hisp.dhis.common.IdentifiableObjectUtils.getUids;
 import static org.hisp.dhis.organisationunit.OrganisationUnit.KEY_USER_ORGUNIT;
 import static org.hisp.dhis.organisationunit.OrganisationUnit.KEY_USER_ORGUNIT_CHILDREN;
 
@@ -115,7 +116,8 @@
     private static final Log log = LogFactory.getLog( DefaultAnalyticsService.class );
     
     private static final String VALUE_HEADER_NAME = "Value";
-    private static final String PERIOD_META_KEY = "periods";
+    private static final String PERIODS_META_KEY = "periods";
+    private static final String NAMES_META_KEY = "names";
     private static final int PERCENT = 100;
     private static final int MAX_QUERIES = 8;
     
@@ -173,7 +175,11 @@
 
         Grid grid = new ListGrid();
 
-        grid.setMetaData( getUidNameMap( params ) );
+        Map<Object, Object> metaData = new HashMap<Object, Object>();        
+        metaData.put( NAMES_META_KEY, getUidNameMap( params ) );
+        metaData.put( PERIODS_META_KEY, getUids( params.getDimensionOrFilter( PERIOD_DIM_ID ) ) );
+        
+        grid.setMetaData( metaData );
         
         for ( Dimension col : params.getHeaderDimensions() )
         {
@@ -631,9 +637,9 @@
         return params;
     }
     
-    private Map<Object, String> getUidNameMap( DataQueryParams params )
+    private Map<String, String> getUidNameMap( DataQueryParams params )
     {
-        Map<Object, String> map = new HashMap<Object, String>();
+        Map<String, String> map = new HashMap<String, String>();
         map.putAll( getUidNameMap( params.getDimensions() ) );
         map.putAll( getUidNameMap( params.getFilters() ) );
         map.put( DATA_X_DIM_ID, DISPLAY_NAME_DATA_X );

=== modified file 'dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/grid/ListGrid.java'
--- dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/grid/ListGrid.java	2013-03-12 17:07:05 +0000
+++ dhis-2/dhis-support/dhis-support-system/src/main/java/org/hisp/dhis/system/grid/ListGrid.java	2013-03-19 17:54:54 +0000
@@ -79,7 +79,7 @@
     /**
      * A Map which can hold arbitrary meta-data.
      */
-    private Map<Object, String> metaData;
+    private Map<Object, Object> metaData;
 
     /**
      * A two dimensional List which simulates a grid where the first list
@@ -108,7 +108,7 @@
     public ListGrid()
     {
         headers = new ArrayList<GridHeader>();
-        metaData = new HashMap<Object, String>();
+        metaData = new HashMap<Object, Object>();
         grid = new ArrayList<List<Object>>();
     }
 
@@ -219,17 +219,17 @@
 
     @JsonProperty
     @JsonView( { DetailedView.class } )
-    public Map<Object, String> getMetaData()
+    public Map<Object, Object> getMetaData()
     {
         return metaData;
     }
     
-    public void setMetaData( Map<Object, String> metaData )
+    public void setMetaData( Map<Object, Object> metaData )
     {
         this.metaData = metaData;
     }
 
-    public void addMetaData( String key, String value )
+    public void addMetaData( Object key, Object value )
     {
         this.metaData.put( key, value );
     }
@@ -546,11 +546,11 @@
             {
                 // Header
                 
-                String headerMetaName = metaData.get( header.getName() );
+                Object headerMetaName = metaData.get( header.getName() );
                 
                 if ( headerMetaName != null )
                 {
-                    header.setName( headerMetaName );
+                    header.setName( String.valueOf( headerMetaName ) );
                 }
                 
                 // Column cells

=== modified file 'dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/grid/GridTest.java'
--- dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/grid/GridTest.java	2013-03-04 10:30:59 +0000
+++ dhis-2/dhis-support/dhis-support-system/src/test/java/org/hisp/dhis/system/grid/GridTest.java	2013-03-19 17:54:54 +0000
@@ -92,7 +92,7 @@
     @Test
     public void testSubstituteMetaData()
     {
-        Map<Object, String> metaData = new HashMap<Object, String>();
+        Map<Object, Object> metaData = new HashMap<Object, Object>();
         metaData.put( 11, "Eleven" );
         metaData.put( 12, "Twelve" );
         metaData.put( 21, "TwentyOne" );