null value of Element

[Bert Verhees]

Hi,

I have an archetype with following Element

ELEMENT[at0033] occurrences matches {0..1} matches {    -- Condition Status
    value matches {
       DV_TEXT matches {*}
    }
}

I noticed that it is not possible te create an Element-instance with 
data-value null, because my own Object-validator validates against this 
archetype and complains that in this case, value is a required attribute.

Now I wonder, is that so? Maybe I should change my object-validator?

Is it so that in an archetype-snippet like this, value is a required 
attribute? Or is it also possible to use the nullFlavor-attribute 
instead, in that case I need to change my Object Validator

Thanks for any advise

Bert