Hi Ditchford,
Greetings from Syncfusion.
We can achieve your requirement of showing the long value in
the tooltip by setting the dataSource property name that has the long dimension
value to the tooltipMappingName property of the series. We can
access that using the format property in the tooltip. We have
created a simple Javascript application to demonstrate the same. Please find
the below stackblitz link for your sample reference.
Sample link: https://stackblitz.com/edit/hgmq95?file=index.js
Code Snippet:
|
series: [
{
type: 'Column', xName: 'dimensionShort', width: 2, yName: 'y', name:
'Bronze',
dataSource: data, tooltipMappingName:
"long"
}
]
tooltip: {
enable:
true,
format: "${point.tooltip}:
${point.y}"
},
|
Screenshot:

Kindly, revert us if you have any concerns.
If this post is helpful, please consider
Accepting it as the solution so that other members can locate it more quickly.
Regards,
Swetha