RowNumber Column

I tried the solution in VB.NET using the C# converter telerik provides.

Private Sub dgDetail_RowFormatting(sender As Object, e As RowFormattingEventArgs) Handles dgDetail.RowFormatting
If e.CellElement.ColumnInfo.Name = "Line" And String.IsNullOrEmpty(e.CellElement.Text) Then
e.CellElement.Text = (e.CellElement.RowIndex + 1).ToString()
End If
End Sub

however e.CellElement is coming up as not being a member of the RwFomattingEventArgs do I need to import a reference or something? I am already importing

Imports System.Data.SqlClient
Imports Telerik.WinControls
Imports Telerik.Data
Imports Telerik.WinControls.UI
Imports System.ComponentModel