Bug 212371 [Regression] Auto-scale does not work correctly and gridline is not shown anymore when run the attached java file [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
new Object[]{
						oValue
					},
					Messages.getResourceBundle( rtc.getULocale( ) ) );
		}
		return null;
	}
	/**
	 * Computes min, max value, step size and step number of the Axis
	 * 
	 * @param oMinValue
	 *            min value in data points. Double or CDateTime type.
	 * @param oMaxValue
	 *            max value in data points. Double or CDateTime type.
	 */
	public final void updateAxisMinMax( Object oMinValue, Object oMaxValue )
	{
		
		if ( rtc.getScale( ) != null && rtc.getScale( ).isShared( ) )
		{
			updateContext( rtc.getScale( ) );
			return;
		}
		if ( rtc.getScale( ) != null )
		{
			
			
			oMinValue = rtc.getScale( ).getMin( );
			oMaxValue = rtc.getScale( ).getMax( );
		}