Calculate window/room surface ratio with Dynamo

In this post I want to tell about the calculation of Window/Room Surface ratio. Let's start modelling a simple room

Now we have to read the Room and its parameters through Dynamo. We have to install this Package LunchBox Room Element Collector, search LunchBox for Dynamo.

We can start! 

This package allow you to take from a List a number of Element, in this case we take a Room.

We use Get Parameters for reading what parameters we want to know.

Now we have to insert a window in our Room

Selecting the window we can read its surface

Connect Window and Room surfaces 

I used an IF formula for view Window/Room surfaces ratio and to give me a (numerical) message if the result is Less or More 1/8 as the Italian legislation.

I'm looking for a better method to have a message like a coloured room or something else.

That's all!