Oh.. scrap that - I have to upload the images to web prior to posting them on here... I'll have to do that at home!

Here we go...

Nope... afraid not. Just get #error

No, it isnt - I think thats what the problem is.

In my dataset, i have "Start Date" and "End Date"

DaysVoid is a calculation of "End Date" subtract "Start Date"

Hi.

No, it is set to Number.

Also, the answer to my first question that I said it worked - actually didnt.

Thanks for your help - it worked! However....

It now brings back the value (in this case 111) as a weird format;

111.00:00:00

Ive formatted the number right, and the globalization settings are...