Sorry. In preparing the example I found there is a bug in my code: I do add the undesidered point in (0,0).
Don't need any other help for the moment.
Thank you.

I've added a post on newsgroup named "Undesidered mark in chart", with a simple vb project in attachment that reproduces the problem I was talking about. Hope this will be usefull.
Thanks

I need to show marks for a point series.
I selected "visible" and then specify a label (in series's AddXY method) .
The proble is that tchart automatically adds a mark at x=0 Y=0 in my chart even if I don't add any point there.
How can I get rid of this undesidered mark?

Thanks