hi @Bharathiraja Loganathan 

You can check this links:

https://charts.outsystems.com/samples/gradient-fill

https://www.outsystems.com/forums/discussion/49973/how-to-fill-column-chart-with-gradient-colour/

I hope this helps

Thanks

Hi Bharathiraja,
You can use the AdvancedFormat property of the OutSystems chart widget to inject custom JSON that Highcharts uses to render styles. The below json is for your sample reference:

{

  "plotOptions": {

    "column": {

      "colorByPoint": true,

      "colors": [

        {

          "linearGradient": { "x1": 0, "y1": 0, "x2": 0, "y2": 1 },

          "stops": [

            [0, "#4CAF50"],

            [1, "#2E7D32"]

          ]

        }
]
}}}

I hope its helpful.