Bar graph set up

Question

I have created a bar graph (in VS 2008) with 2 data elements.

When the graph is displayed on the report the 2 bars are right next to each other. I would like to have some space between them.

I tried going in under the properties for the chart and changing the PointWidth to 0.8 but it would not allow me to set it as that (got 'property value is not valid' error).  Tried changing it to 0 but that did not have any effect.

Can someone point me in the right direction? At this point I don't know what else to do.

Thanks.