Bug 145970 [REGRESSION] Set format in parameter dialog will lose the orginal data set by user.
Reproduce: 1. New a report scalar parameter, "p1", in the initialize dialog, set format to be uppercase. 2. New a data set with query "select * from CLASSICMODELS.CUSTOMERS where CLASSICMODELS.CUSTOMERS.CONTACTFIRSTNAME = ?". And bind the data set parameter to the report parameter "p1". 3. Insert a table into layout view, drag column [CUSTOMERNUMBER], [CONTACTLASTNAME], [CONTACTFIRSTNAME] from Data Explorer into table detail row respectively. 4. Preview. In the pop-up parameter dialog, type "Eric". Press "ok". Actually result: There was no data displayed. Expected result: There is one record whose first name is "Eric" in database.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
*            String
	 * @return String
	 */
	private String getParameterName( String configVarName )
			throws ReportServiceException
	{
		String paramName = null;
		
		List parameters = getParameterList( );
		if ( parameters != null )
		{
			for ( int i = 0; i < parameters.size( ); i++ )
			{
				ScalarParameterHandle parameter = null;
				if ( parameters.get( i ) instanceof ScalarParameterHandle )
				{
					parameter = ( (ScalarParameterHandle) parameters.get( i ) );
				}
				
				String curName = null;
				if ( parameter != null && parameter.getName( ) != null )
				{
					curName = parameter.getName( ) + "_" + parameter.getID( ); 
				}
				
				if ( curName != null
						&& curName.equalsIgnoreCase( configVarName ) )
				{
					paramName = parameter.getName( );
					break;