Thanks very much Ron.

"Ron de Bruin" wrote:

You can use the If function

=IF(Sheet1!C28+Sheet1!C27=0,"",Sheet1!C28+Sheet1!C 27)


--
Regards Ron de Bruin
http://www.rondebruin.nl


"Steved" wrote in message ...
Hello from Steved

Please what is required below to have the cell blank as it is showing a 0
value.

='in..out of service'!C28+'in..out of service'!C27

Thankyou.