Sounds like you placed the
"maximum ({HIST_TPPAPOSITION.ACCESS_STAMP})"
in the select expert and not in a formula field.
If you are trying to create a field that displays the maximum value of the Access_stamp Field from all rows in the report then in the field explorer add a new formula field and use your formula there.
You can then place that field in your report canvas.
Is that what you were trying to do?
Edited by DBlank - 10 Sep 2009 at 7:06am