Hi everybody.

I em making a purchase order fomrat with the capability of a Kanban supply
system, and I need the customer to order no more than the specified pallets
of product.

I have several columns where the customer will enter the amount of pallets
neded for each product, and then at the end the format will sum all the
pallets, but I need a function so that when the customer enter the amounts
and the sum of the pallets in the bottom, passes the specification, a message
error pops up to indicates the client that he had passed the limit of pallets
to order.
I tried the "Validation" function in the Data menu, but it does not
recognizes the sum as a whole number.

I hope you can help me
--
Kind Regards

Pablo Fernandez