Form validation cannot be numeric and 'not required'

#1

My form field looks like this:

            validation: "numeric",
            value: "100"
            required: false

By my logic this should allow an empty field or any valid number but the validation fails when the field is empty ie. it doesn’t seem possible to have a numeric field that is not mandatory

#2

This is the expected behavior.
as the “numeric” validation rule means that the field can only contain the number, while the empty string is not a number.
In your case you may try to create a custom validation rule.
You can find a tutorial here:
https://docs.dhtmlx.com/suite/form__work_with_form.html#validatingform

#3

So what you are saying is that a non-required numeric field will force the user to enter a zero in that field?
That behaviour doesn’t seem correct to me