Deactivate formula after a set time

Y

y_not

Is it possible to set formulas to deactivate after a given period o
time?

I email out a number of spreadsheets that have taken many hours/days t
assemble to clients. If they choose to change suppliers (as one recentl
did) they can simply use my spreadsheets and change the logos and th
new supplier gets all the benefits without the pain!

The value of the spreadsheets (the useful life of the data) is only
few days so it would be useful if the formulas stopped working afte
maybe a month.

Any ideas/suggestions would be appreciated

Ton
 
R

Ron de Bruin

Hi

Only possible if the user must enable macro's to use your workbook.
Is that true ?
 
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