[How to use Alphablinding]

I want to use for certain things when alphablinding through my character, I do not understand the examples that are exposed someone here would know how to do?

[alpha on the roofs of houses]

I will look the information and then tell you how I was

 

Thanks for your answer

[alpha on the roofs of houses]

good morning

 

I recently acquired the Leadwerks, I was doing various things, but wanted to help me with something. I want a character cross when the door of a house roof is made transparent (3rd person seeing it on the character)

 

From already thank you very much.

[Official Leadwerks Exporter for Blender]

No funciona