Actually, the results were worse. When displayed, the tooltip included the text for all of the tags I used to create the tooltip. For example, my tooltip included a '<div>'. So '<div>' was what I saw in the displayed tooltip. For example, rather than seeing '123', I saw '<div>123</div>'.

Hello Ray,

I couldn't see where the problem really is.

I've built your example and everything went well, even the display of the tooltip.

You can see the result from the attached screenshot

Hello Ray,

Today I wasn't able to look closely at your matter and I apologize for this.
I will make everything possible to give you some response until tomorrow.

Thanks for you patience!

I checked my attachment and my changes are there. As I said, they were small changes. I replaced the template:

<script id="tooltipTemplate" type="text/x-jquery-tmpl">
<div id="tooltip" class="ui-widget-content ui-corner-all">
<div style="margin:10px;color:#7446B9">
<span id="year">${item.Year}</span>
<span id="tooltipValue">Population: ${item.Canada}</span>
</div>
</div>
</script>

with

<script id="seriesTemplate" type="text/x-jquery-tmpl">
<div id="seriesTooltip"></div>
</script>

and updated the HTML for seriesTooltip. All I did was make the template more generic.

Hello Ray,

Actually, I couldn't manage to find any differences from the sample I've sent you. Respectively I haven't found any errors.

Could you please make sure that you are attaching the right example.

I'm looking forward for you sample.