I have a form with three cascading selects. A change in the selection,
causes it to change the contents of the other selects. They work just
fine, but I have other optional fields in the form which I wish the user
to check out or input something before doing a "real" user triggered
form submit. 

What are my other options for triggering the changes in the cascading
selects without doing a submit of the form? Other than using JQuery,
that is.

I tried adding a checkbox as a workaround so that a user must click it
first, something  like "All of the above is complete and correct." If
the user clicks on it, but there are form errors, the checkbox resets to
False. I tried to set the form.vars.completed variable in a function
called by onvalidation, but it's not changing the value.  Also tried
'value', '_value', '_checked' of the form.element('#myselect'), with no
success. (Can I even change the values a user has entered in a form?) 

/r
Nik

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