It always helps if you tell us exactly what you mean by "no success", but the code you posted runs fine here. Chart::Plot must be installed separately as it does not come with GD, but then if that was your problem you would have received an error to that effect.

You should also know that unless you have an older version of GD you will not be able to create GIF images, so your code will create a PNG image and save it with a .GIF extension.

--
I'd like to be able to assign to an luser