Change item text of a WebSegmentedControl

I would change the text of a segment in a WebSegmentedControl. Normaly this should work:
WebSegmentedControl.Segment(Index As Integer, Assigns Text As String)

In the Shown Event I use this code:
Sub Shown()
me.Segment(0, “first item”)
me.Segment(1, “last item”)
End Sub

I get this error in Debug Mode:
There is more than one item with this name and it’s not clear to which this refers.
me.Segment(0, “first item”)
There is more than one item with this name and it’s not clear to which this refers.
me.Segment(1, “lastitem”)

Me.segment(0)=“first item”

Assigns means use an =