Do not allow users to decrement the number in a field

Hi,

I would suggest Event Receivers, and use before and after properties

see these links for reference

http://ift.tt/MnWCgd

http://ift.tt/1mQDyC1

How to: Create an Event Receiver http://ift.tt/MnWEok

How to: Create an Event Receiver for a Specific List Instance http://ift.tt/MnWEok

Working with BeforeProperties and AfterProperties on SPItemEventReceiver http://ift.tt/1mQDwKx

Hope this helps!

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MCITP: SharePoint 2010 Administrator

MCTS - MOSS 2007 Configuring, .NET 2.0

| SharePoint Architect | Evangelist |

http://ift.tt/19nRh2r

http://ift.tt/1iEOKBE