Filter rule with none condition

Hello dears,
i want to make a filter rule with (none condition ), this mean to get all category elements in filter, any idea how to make that ?

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I don’t know if you can create an empty filter like that through the API but you can create an all-encompassing filter instead. Create a filter rule with something like Family Name Contains "".

I think you need to use ‘greater than’ in order to filter empty values. (And leave the value blank.)

Not sure…I have to re-learn this every time.