Using dashboard chart node but chart label is set but disappers?

General
1

OK, this issue has me wondering! I am sending two series to a dashboard chart node, that is working just fine, I happen to be enabling the legend, that is fine. But as part of the msg object I am also sending a property named 'site' and setting the chart label to '{{msg.site}}'... this does work, but it disappears once the chart finishing updating, i.e. displaying the payload, which is the two series.

Here is what I am sending to the chart node... SITE is a const to a string that is name of flow variable, of course...

{site: `Site ${flow.get(SITE)}`, payload: theChart}

So msg.site = what is in flow.get(SITE), and payload is of course a valid object structure to show stored data. The 'theDown' and the 'theUp' variables are the x and y values, as per the stored data requirement for chart to plot values as needed of course.

const theChart = [
    {
        "series": ["Down", "Up"],
        "data": [
            theDown,
            theUp
        ],
        "labels":[
            "Down",
            "Up"
        ]
    }
]

As I note above, theChart object structure is accepted by the chart node just fine, my series are display, but once the chart node finishes updating, the label once set by msg.site disappears.

The only thing I can think of is that I need to add some property to the 'theChart' structure? What should that be if so?

2

Can you post a complete simple flow that we can use to see the problem? Use inject or function nodes to create the data.