Bug 214197 [Regression] Auto scale does not work correctly [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
* 
	 * @return
	 */
	public final Object getMaximum( )
	{
		return oMaximum;
	}
	/**
	 * @param o
	 */
	public final void setMaximum( Object o )
	{
		this.oMaximum = o;
	}
	/**
	 * 
	 * @return step size
	 */
	public final Object getStep( )
	{
		return oStep;
	}
	/**
	 * @param o
	 */
	public final void setStep( Object o )
	{
		this.oStep = o;
	}
	/**