cleaning field value if it is hidden ??

Hi every one
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I also finally updated chronoforms 6
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there is a dropdown box values such as employed, independent, student, unemployed
selected each value shows three textboxes while hide the others
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the problem is when a user change his/her mind i am having multiple values
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how can i clear textboxes if they are hidden when dropdown selection changed

Don't just hide them, disable them too.

thanks alot