SmartRF Packet Sniffer: Logical negation (NOT) of the display filter condition

Hi,

Example:  to show only ADV_IND packets we can use this filter condition:

APT = ADV_IND

But how can we negate this condition? To show all packets except ADV_IND (filter out a particular type of packet), something like that:

APT != ADV_IND

Is this possible at all?

Thanks,

Marcin