Is it possible to create a Hebrew form when writing direction is right to left?

Yes. It is possible by injecting custom CSS to your JotForm.

.form-all {

direction: rtl !important;

}

.form-sub-label {

direction:rtl;

unicode-bidi:bidi-override;

}

Please refer to the guide below on how to inject CSS code to your JotForm.

http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Code

You may also take a look at the template below which was created by one of our colleagues that you may use for your JotForm.

http://www.jotform.com/form-templates/arabic-financial-application-form-rtl-css-2

Hope this information helps!