If you have a pair of summary fields, one can return the minimum date and the other can return the maximum date from your found set and you can put them in your header.
You can also set up a system where the user selects/enters these two dates in global fields as a way to specify data used in a script as find criteria (or relationship match values). If you did that, you need only put these global fields in your layout's header.
But please note that these two methods will not produce identical results in every situation.
Summary fields worked perfectly. Still having problems with scripting a range of dates but might be a workaround. Thanks
Just keep in mind the differences.
If you specify a date range of 1/1/2015...1/31/2015
Your found set might a group of records where the minimum date is
1/2/2015 and the maximum is 1/28/2015.
So the first range specifies your search criteria and is what you would get from a pair of global date fields. The second range is the actual range of dates produced. With some data, these two ranges will nearly always be the same. In others they will not be and for some users the difference will not be significant...