ChartJS 'Line chartjs' does not show output in NodeRED? - chart.js

Question

My requirement is to output 2 y-axis chart with real-time data readings in NodeRED. I have installed ChartJS package in NodeRED and now according to the documentation of the package there should be PATH, Title, X-Axis, Y-Axis, Payload. But I couldn't find the Payload tab anywhere in the Line Chartjs node?
Ref : https://www.npmjs.com/package/node-red-contrib-chartjs
So I assumed that I have to add the code which belonged to Payload inside a function node before the Line Chartjs node.
What I have tried : (my function node)
var left = {payload : msg.payload.readResults[0].v };
var right = {payload : msg.payload.readResults[1].v };
//return [[left,right]];
const labels = [1,2,3,4,5,6,7,8,9,10];
const data = {
labels: labels,
datasets: [
{
label: 'Dataset 1',
data: left,
borderColor: '#ff0000',
backgroundColor: '#ff0000',
yAxisID: 'leftCamber',
},
{
label: 'Dataset 2',
data: right,
borderColor: '#0000ff',
backgroundColor: '#0000ff',
yAxisID: 'rightCamber',
}
]
};
const config = {
type: 'line',
data: data,
options: {
responsive: true,
interaction: {
mode: 'index',
intersect: false,
},
stacked: false,
plugins: {
title: {
display: true,
text: 'Chart.js Line Chart - Multi Axis'
}
},
scales: {
leftCamber: {
type: 'linear',
display: true,
position: 'left',
},
rightCamber: {
type: 'linear',
display: true,
position: 'right',
// grid line settings
grid: {
drawOnChartArea: false, // only want the grid lines for one axis to show up
},
},
}
},
};
const actions = [
{
name: 'CamberGraph',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data = chart.data.labels.length
});
chart.update();
}
},
];
Here I have tried to get the 2 HTTP outputs I've named as left and right as my datasets(2 y-axis) vs hardcoded x-axis(1 through 10) which will be Footage later on.
PS : I have returned the left and right using return statement and it's outputting the values as I expected.
Currently I do not get any output in my debug window as well as in my ChartJS Line Chart when I inject the node. Using what I've tried so far can anybody show where I've done wrong or add/remove anything to make the graph work?
Thank you!