- Summary:

 DateTime type parameter format changes and
becomes invalid when reopen parameter dialog in desktop viewer.

Description:.
Fixed,  Used the same formatter to format the date

UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java

@@ -352,7 +352,12 @@ public void initDialog( )
 		// txtDisplayName.setFocus( );
 		// initiate function firstly then data type field.
 		// Expression gets the comment.
-		txtExpression.setFocus( );
+		if(txtExpression!=null&&!txtExpression.isDisposed())//add if/else block to fix TED 52776:NPE thrown
+		{
+			txtExpression.setFocus( );
+		}else{
+			txtDisplayName.setFocus( );
+		}
 		if ( isAggregate( ) )
 		{
 			initFunction( );