Unity3 - Selecting instances of the same behaviour/component through inspector

In Unity3, say I attach two component of same parent types to a game-object.

When I attempt to attach a public variable of that type, through the Inspector, I can select gameobjects with that type of components/behaviour attached. But if the gameobject has two or more instances of the type, I can only select the first one.

Is there any walkabout? I could do this with no problem in Unity2.5

Here's some screenshot to illustrate what I mean:

Say I have to instances of FireMultiEnemyEntity on the Mothership game-object. But when I click on the button to select which instance of the behaviour to attach to Parent_:

I can only select Mothership; But I can't select which FireMultiEnemyEntity scripts to attach to Parent_

(The details are that I have two scripts inheriting from FireMultiEnemyEntity on the same gameobject).

How do I select a different instance of the behaviour?