Just started with this awesome module!
I am trying to create a rule where 'form element fieldname value check' needs to look at the field, and do something only if it is a null value. Entering 'null' in the value text area does not do the job. Leaving it blank is not possible as it is a mandatory field. How do I do this with rules, without hacking the other module that is creating the form?
I tried putting the condition (with negate)
return array( 0 => array('value' => NULL));