newbie question.

I have a field which can contain a number. Not every record requires a number to be entered but when it does I need a script that will go through all previous records to find the highest number used, then I can increment it by 1.

Create a summary field that finds the maximum in all records displayed - call it Max. If, on creating new record, you want your number field to update itself, add an auto enter calculation: Max+1.

It would be faster to use a self-join relationship, with a cartesian join (use the X instead of = comparison operator), and then use Last(selfjoin::field) as the calc in the Set Field[] script step. If the numbers could be out of sequence, then you'll need to sort the self-join relationship by this field.

This seems a good occasion for LookupNext ( ) function

Thank you all so much!!

I've used "dwins" Summary field solution and it works great...... now, I must go and buy a book and learn more about FM

Cheers!!