Bug 102436 Date/time value not stored correctly in report design
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
value = choice.getValue( );
				}
				else if ( COLUMN_DISPLAY_TEXT.equals( property ) )
				{
					value = choice.getLabel( );
					if ( value == null )
					{
						value = choice.getValue( );
					}
					if ( value == null )
					{
						value = LABEL_NULL;
					}
				}
				if ( !( value == null ^ newValue == null ) )
				{
					if ( newValue == null )
					{
						return true;
					}
					if ( DesignChoiceConstants.PARAM_TYPE_DECIMAL.equals( getSelectedDataType( ) ) )
					{
						try
						{
							if ( DataTypeUtil.toBigDecimal( value )
									.compareTo( DataTypeUtil.toBigDecimal( newValue ) ) == 0 )
							{
								return true;
							}
						}