Can't cast AnimInstance to my Animation blueprint

Hi everyone,

I’m trying to access to my Animation blueprint from my Pawn.

In order to do this,i’m following this post.
So,i get a reference to my mesh in the blueprint event graph,then use “GetAnimInstance”,but then,
i can’t cast it to my animation blueprint,basically the cast function doesn’t appear into the dropdown menu.

It sound strange since in my pawn “Components” tab,i set my “Anim blueprint generated class” property.
Also the animation work on the pawn so i really don’t know why i can’t access to it.

I’m using Unreal 4.5.1

Any ideas on why i can’t get access to my animation blueprint?

Thanks in advance.

Ps:yes,i’ve tried unchecking the “Context sensitive” box.