exclude private messages from notifications total

[Dr.CustUmz]

im trying to exclude PMs from the total count of notifications and the list.

<if condition="$notification['total'] > 0">

i know it would be built off this, i just have no idea how to set it up

example

<if condition="$notification['total'] > 0"> (AND IS NOT A $bbuserinfo[pmunread] NOTIFICATION)
show all other notifications
<else />
NO NEW NOTIFICATIONS
</if>

*note !$bbuserinfo[pmunread] was tried, but failed

i found $notifications['pmunread']
but still cant figure out how to not show them in the notifications