Setting a date range for a report

SOLVED

Hello,

I have a "previous 12 months stock usage" report that I use to help with predicting stock reorder levels.

Its set up with a pre-set date range that I have to change every so often to reflect usage of items that fall outside of the original date range since time has moved on and that original date is not catching all the current data.

Is there a way of setting criteria (or an expression) to automatically select the data from the last 12 months from the date when the report is created?

Also is there a way of showing graphs/charts within reports to visualize trends or does that involve exporting data out to excel/access?

Regards

Andy Stoneman