I don't know what you mean by "set the data" - sorry, I'm relatively new at all this.

The table I'm working with gets updated most days with new data; I...

Thanks for your input, but I still think it slightly missed the point of what I want to achieve.

I need to be able to set the reports' parameters to say something...

The customers' requirements are that they can see these daily records building up in a report to the end of the month.

If I did as you suggest, I would...