Bug 120503 Cascading Parameter can not drop into layout
Details: Cascading Parameter can not drop into layout Step: 1.Open a report design and Create a Sample Data Source and data set by "select * from CLASSICMODELS.CUSTOMERS" 2.New a cascading parameter and create CUSTOMERSNUMBER and CUSTOMERSNAME in parameter named number and name. Press OK 3.Drop parameter name into layout. Actual results: The parameter in Cascading Parameter Group can not drop to layout
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
}
			else
			{
				displayName = handle
						.getDisplayLabel( DesignElementHandle.USER_LABEL );
			}
			if ( !StringUtil.isBlank( displayName ) )
			{
				if ( includeElementName )
				{
					return elementName + " - " + displayName; 
				}
				return displayName;
			}
			return elementName;
		}
		return ""; 
	}
	/**
	 * Gets the master page count.
	 * 
	 * @return the count of master page
	 */
	public static int getMasterPageAccount( )
	{
		SlotHandle slotHandle = SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( ).getMasterPages( );
		Iterator itor = slotHandle.iterator( );
		int account = 0;
		while ( itor.hasNext( ) )