Confirmation Dialog based on amount


I am looking to add a Confirmation Dialog box to my Sales Header table

When validating the Amount field I want to display a Confirmation Dialog IF the user has entered a very large amount

For example, if a user attempts to Release a Sales Order with an Amount > $10,000,000 I want a Confirmation Dialog box to display and ask the user if they want to continue

I’ve created Confirmation Dialog boxes that display if a value has been changed but I’m not sure what the format would look like for the scenario I described above.

Any insight or examples would be much appreciated.