Hi Helmut,
Sorry, I do not quite understand your question.
If you want to use {dataItem}, please make sure you include them in the image map. For example:
viewer.ImageMap = viewer.Chart.getHTMLImageMap("clickable", "index={dataItem}&value={value}", _
"title='[{dataSetName}] {x|mmm dd, yyyy}: USD {value|2}'")
In the above image map, the dataItem is available as the attribute "index", and the data value is available as "value".
Regards
Peter Kwan |