Drawing line at last record

Hi.
I have a table containing two groups and a detail area.My report has multiple pages.I want to draw line after the last record on every page.I think that expression will be written in record's bottom expression area.How can I choose the last record in every page.Or is there another way to do this.Could you help me please?why wont u draw a line on page footer? when u draw a line on page footer it will diplay on the bottom of each page.|||Thanks but it didn't work
I drawed horizontal line across the page footer.
But there is several blank rows between the last record and the line in page footer.And this is never looking good.If you have another idea about this please share with me.