You can use the If function
=IF(Sheet1!C28+Sheet1!C27=0,"",Sheet1!C28+Sheet1!C 27)
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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.