thx, but sorry, you did misunderstand ...
i know i can easily get the co-ordinates (the x- and y- values, labels, whatever) of a point on a chart.
for each of the data plotted there is also a loadcase "label" (in a column on the same sheet). i know i can find the point (and then the loadcase), but it'd be nice if excel could tell me the loadcase description rather than the co-ordinates ...