how can change the tooltip point style?

[saschahaendle]

How can i change the point style in the tooltip? Or how can i disable this one?

return ChartJs::widget([ 'type' => 'line', 'id' => 'durations', 'options' => [ 'maintainAspectRatio'=> false, 'responsive' => true, 'plugins' => [ 'tooltip' => [ 'usePointStyle' => false, ], ] ],
This is my code like the infos from chart.js website. But this not will working with the widget. I hope anybody can help me.