Clear incorrect user entry and prevent from moving to next field

[edm1965]

Hi, I'm almost there. . . I need to clear a single form entry that a user enters incorrectly. For instance, a field needs to have a valid name and not left blank. Also, the field cannot contain "n/a" or "self" or "none". If any of those are entered, the user gets an alert, but i need the field entry that they entered cleared out so they are forced to enter a valid name or text string before continuing.  Any ideas?

[try67]

It's a very bad idea to "lock" the user into a field. What if they want to save the file, or close it, at that point? Preventing them from doing so will surely annoy them and cause them to complain to you. I don't recommend you do that.

[edm1965]

Nope. Its required. The whole point is to annoy them so it isn't left blank or have incorrect information.  The field needs to be enforced and it's required.

[edm1965]

To be clear. . . 

The field MUST have a valid entry. They cannot enter: "none", "sefl", "n/a or na" nor can it be left blank

A name needs to be entered. It's for insurance purposes. There is no point otherwise 

[Bernd Alheit]

It is a bad idea.

[edm1965]

No. Its a good idea.  It's a binding that says: "You cannot advance until this field is filled properly" I have a messafge that prompts them to call for assistance if necessary, but no. The field cannot be left blank of have incorrect data entered.   

Anyway, I figured out that I needed to move my script to the "Validate" box fpr the field. Now it clears the field and keeps the focus on that field.  I'd like to keep them locked to that field and prevent them from even advancing to the next field until a correct value is entered.