TFS: how to limit field integer value

There are two integer fields ('lowest' and 'highest') in TFS work item. Is there any possibility to limit the value of the 'lowest' to be not greater that value of the 'highest'开发者_运维问答?

Thanks a lot!

It is not possible to do this sort of comparison in TFS Work Items.

This MSDN page lists the available work item rules.

• REQUIRED
• READONLY
• EMPTY
• FROZEN
• CANNOTLOSEVALUE
• NOTSAMEAS
• VALIDUSER
• ALLOWEXISTINGVALUE
• MATCH
• ALLOWEDVALUES
• SUGGESTEDVALUES
• PROHIBITEDVALUES
• DEFAULT
• COPY
• SERVERDEFAULT