multi-item type comparison

multi-item type comparison

is there a boolean trigger condition that looks to see if a unit or hero has more than one of a type of item.
example: ((Triggering Unit) has 2 of item type Rocket Cannon) Equal to True

is there a function similiar to this (i just made this one up as an example): Hero - Hero has Multiple Items of Type

this goes in trigger section... cuz its a trigger.

oh, sorry.