Bug 122584 Cascading parameter values can't be displayed properly in html viewer.
Description: Cascading parameter values can't be displayed properly in html viewer. Steps to reproduce: 1. Preview attached design file in html viewer. 2. Click on "change parameter" button in html viewer. 3. Select the first parameter value and expect that the second parameter value in the same cascading parameter group could be displayed, but it is not displayed.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
public static Double toDouble( Object source ) throws BirtException
	{
		if ( source == null )
			return null;
		else if ( source instanceof Integer )
		{
			double doubleValue = ( (Integer) source ).doubleValue( );
			return new Double( doubleValue );
		}
		else if ( source instanceof BigDecimal )
		{
			double doubleValue = ( (BigDecimal) source ).doubleValue( );
			return new Double( doubleValue );
		}
		else if ( source instanceof Boolean )
		{
			if ( true == ( (Boolean) source ).booleanValue( ) )
				return new Double( 1d );
			return new Double( 0d );
		}
		else if ( source instanceof Date )
		{
			double doubleValue = ( (Date) source ).getTime( );
			return new Double( doubleValue );
		}
		else if ( source instanceof Double )
		{
			return (Double) source;
		}
		else if ( source instanceof String )