If you want to display the user-defined tooptips, you need to set as showDataTips="true" and set the value of dataTipJsFunction property to the name of the JavaScript function. ●Layout <Column3DChart showDataTips="true" dataTipJsFunction="dataTipFunc"> ●Script Parameters seriesId: Series ID seriesName: The name of the series, which is set as the value of the displayName property. index: The index of the item in the series. xName: The value of the displayName property in the horizontalAxis node. yName: The value of the displayName property in the verticalAxis node. data: The record of the dataset declared for creating the chart. values: The value of the item. The value is an array and each element in the array is different depending on the chart type. Bar2D(3D)Series 0: X-axis value, 1: Y-axis value Column2D(3D)Series 0: X-axis value, 1: Y-axis value Area2DSeries 0: X-axis value, 1: Y-axis value Bubble3DSeries 0: X-axis value, 1: Y-axis value 2: radius Line2DSeries 0: X-axis value, 1: Y-axis value Pie2D(3D)Series 0: value, 1: percentage, 2: nameField Please refer to the html code for the details.