The documentation for this area is not completed. Even the UI for tag history was just implemented a few days ago. Here’s a simple rundown to at least get something on screen. It’s pretty much what Phil said, but with some pictures to help.
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Bind to the “example” data source. It should look something like this if binding to only one tag’s history. After you do this, your XY chart should look mostly blank because it is not configured to handle the data coming in.
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Change the XY chart’s props.series[0].data.y object so that it matches the alias you provided in the tag history binding.
At this point, your historical data should be showing. After this, I would suggest mostly exploring around the options in the XY chart to make it look like you want.