Using messageBox in locking fields

I've got a form that's functioning somewhat like an index. When data is filled in for a particular entry, it needs to be locked down. My strategy for accomplishing this is using a button with scripting to set the access on those particular fields to ReadOnly.
This all works great -until I try to add in a variable of a messageBox in which the user gets a warning and is allowed to back-out of the lockdown to make changes as needed. It seems that using hte messageBox is an all or nothing proposition -I can't figure out how to access the "okay" or "cancel" buttons to create behavior from there. Everything I try either locks the fields or does not allow the locking regardless of the button pressed.
Can anybody point me in the right direction here?
Thanks!
Jennifer

Take a look at page 594 of the XML Forms Object Model Reference. You'll see what the return values for xfa.host.messageBox() are, and that they are based on what button is clicked by the user. Hope that helps.
Chris
Adobe Enterprise Developer Support

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Hi Liem,
You can find answers to such questions easily in adobe designer help. I am providing below the answer to your query, Hope it will be helpful:
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Lock Field:
LiveCycle Designer lets you lock all field objects on the form design by using the Lock Fields command. All field objects in the form design cannot be selected, moved, or modified.
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Using messageBox in locking fields

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