This sample is to display the line of target value. 
It is useful to check if we achieve the targets.

ā—¸Layout
<annotationElements>
	<AxisMarker>
		<lines>
			<AxisLine value="2500" label="Goal(2,500)">
				<stroke>
					<Stroke color="#ff0000" weight="1"/>
				</stroke>
			</AxisLine>
		</lines>
	</AxisMarker>
</annotationElements>