Data bars don't print on OWC generated gif

[russki]

In a web app I am creating a chartspace server-side (in aspx);

Response.ContentType = "image/gif"

....create and oChartSpace...

Response.BinaryWrite(oChartSpace)

This displays fine, but when I print the page or the gif I just get the
axis - no bars

How do I get a printable image?

Thanks in advance

Russ