dataSet.gradientColors = gradientColors not working

[cooldev2k20]

val gradientColors: MutableList<GradientColor> = ArrayList() gradientColors.add(GradientColor(Color.parseColor("#3375FE"), Color.parseColor("#BADF47"))) gradientColors.add(GradientColor(Color.parseColor("#F65272"), Color.parseColor("#DEDBF4"))) dataSet.gradientColors = gradientColors

I am using this but it is not working, while normal colors working fine.