I want a script that will allow a parameter to be passed to it. Suppose the parameter passed will determine the heading on the reoport (as well as other things, like perhaps the sort). In the script I can do a getparameter and then put "heading name 1" into a heading field to be printed out on the report. The question I have is, what if two or three users are at one time creating the same report, each with a different heading. How will we get three different headings if the heading name goes into a the same field?

Use a global field?

Doesn't the global field change as each user uses it? Let's say the name of the global field is heading. I go into the script and pass a parameter "John's Report" which goes into the global field heading. At the same time another user uses the same script and gets "Mike's Report" into the globalk field heading. What happens? Or maybe I'm missing something.

Global fields hold user-specific (more precisely, session-specific) values.

Not trying to harp on this, but if two users are printing the same report as described above, each will get their own heading?

Yes.