How to increase Splunk Trendline Marker Data Point...

Dashboards & Visualizations

So currently I have a line chart below with a marker for each data point and here is the code below for that.
<option name="charting.chart.showMarkers">true</option>
<option name="charting.chart.markerSize">3</option>

but when I try increase the marker size it does not work. If anyone has a solution, it would be greatly appreciated.
Thanks.

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