hi,
can you let me know please, how deep (how many level) this function is
nested?
=IF(B51F51;CONCATENATE("";D51);IF(B51<F46;CONCAT ENATE("<";D46);
(10^(FORECAST(B51;OFFSET(E45;D52-1;;2);OFFSET(F45;D52-1;;2))))))

The nesting shouldn't be more than double, otherwise I have to
validate my excel spreadsheet at work before using it.

thanks
Sar