Variant configuration-dependencies not shown if characteristic does not have a value

[Luca_P]

Hello,
We have some characteristics in our variant configurator which have no entry required (it is not mandatory to define a value).

However, if no value is inserted, the dependencies linked to them do not work

Ex. The characteristic WM_INFEED has the possible values:

 

 If not value is chosen during the configuration, the dependency below does not give back any value (WM_INFEED checks that the value is different from something)

WM_MODELLO = 'RA' AND
WM_INFEED <> 'ROTATING_BELT_INFEED' AND
(WM_SERIE = 'V4' OR
WM_SERIE = 'V8')

We have many dependencies in this situation.
Is it possible to find a solution which does not require modifying all the dependencies or make mandatory inserting a value manually?

Thanks,