 		 * @param bounds data bounds from a record key
 		 * @param labelFunction function to generate strings from the displayValue
 		 * @param xAxis flag to specify whether this is an xAxis tooltip
-		 * @param horizontalMode flag to specify bar chart horizontal mode
-		 * 
+		 * @param useXMax flag to specify whether the toolTip should appear at the xMax of the record's bounds (as opposed to the xCenter, which positions the toolTip at the middle)
 		 */
-		public function showProbeTooltips(displayValue:Number,bounds:IBounds2D,labelFunction:Function,xAxis:Boolean=false, horizontalMode:Boolean=false):void
+		public function showProbeTooltips(displayValue:Number,bounds:IBounds2D,labelFunction:Function,xAxis:Boolean=false, useXMax:Boolean=false):void
 		{
 			var yPoint:Point = new Point();
 			var text1:String = "";

			else yAxisTooltipPtr = null;
			if( xAxisTooltip != null )
			{
				var xMax:Number = stage.stageWidth - xAxisTooltip.width;
				var xMaxTooltip:Number = xAxisTooltip.x+xAxisTooltip.width;
				while( xMaxTooltip > xMax)
				{
					xAxisTooltip.move(--xAxisTooltip.x, xAxisTooltip.y);
					xMaxTooltip = xAxisTooltip.x+xAxisTooltip.width;
				}
				xAxisTooltipPtr = xAxisTooltip;
			}

			tempDataBounds.projectPointTo(yPoint, tempScreenBounds);
			yPoint = localToGlobal(yPoint);
			
			if(xAxis || useXMax)
			{
				xAxisTooltip = ToolTipManager.createToolTip(text1, yPoint.x, yPoint.y);
				xAxisTooltip.move(xAxisTooltip.x-(xAxisTooltip.width/2),xAxisTooltip.y);
				constrainTooltipToStage();
			} else
			{
				yAxisTooltip = ToolTipManager.createToolTip(text1, yPoint.x, yPoint.y);
				yAxisTooltip.move(yAxisTooltip.x-yAxisTooltip.width, yAxisTooltip.y-(yAxisTooltip.height/2));
				constrainTooltipToStage();
			}
			setProbeToolTipAppearance();
