# pick any unit, that has string fields defined (e.g. `manuf` - `Manufacturers`)
# pick any string field (e.g. `Name`) and apply following modifications to it's options:
* remove `required` option
* set `min_len` option to `5`
* set `max_len` option
# try submitting the form without entering that field value
# confirm, that no validation error happened on that field
# enter `ab` value in the field and submit the form
# confirm, that validation on string length is performed