I would like to create a number field that would have a number range from 0000 to 9999. The highest number would be 9999 after reaching it, the field would go back to 0000.

I also want to have a script that would allow me to increase and decrease the number on that field by 1, taking into consideration that if the field has the number 0000 and I use the script to decrease that number it would have to go to 9999.

thanks in advance.

Create a global number field called gNumber. Create a script that:

finds all records

sorts (ascending) by your record ID field

goes to the last record

sets the record ID of the last record into the gNumber field

creates a new record

sets the record ID field of the newly created record using the following calculation:

Case(

gNumber<9999,gNumber+1,0000)

One thing I would recommend, though, is to create a number field that is an auto-enter serial # (your users never need to know it's there). Do you forsee any problems with records in your database having duplicate record ID? At least with an auto-entered serial #, you'll be able to sort out any messes that will result from having duplicate record IDs.