calculation for locking a record?

[dr.stitch]

I am working on a layout that I would like to prohibit editing to, once signed.

What I'd like happen is the following:

When a new record is created, its status is defaulted to "Open". Then, when a user presses a button to sign the record, etc, the status changes to "Signed" via a script. Thereafter, the record has view-only access.

Could anyone suggest an easy way of doing this?

[mz123]

With a privilege set, you can lock the records with a boolean statement.

Select the table you want to conditionally lock, selected "limited..." for editing the records and then type in the calculation....

Table1::Signature = "" //If the signature field is empty, then yes the user can modify.

Make sense?