Can we call function in dispatch or emit in dispatch?

[DigneshGujarathi]

I am trying to get value of onclick pie chart data.
"dispatch": {
elementClick:function(e) {
console.log(e);
this.chartData = e.data;
this.onClickChart.emit('e.data'); //gives error Cannot read property 'emit' of undefined
this.toggle(e.data); //gives error this.toggle is not a function
},

[Anaamika]

const that = this;
......
......
this.options = {
chart: {
.............
............
"dispatch": {
elementClick:function(e) {
that.onClickChart.emit(e.data);
},
}
}