Height property depending on story number

[pedrocollares]

I'm trying to create a property that gives me a "Height discount" depending on the story my element is. That discount should be used to put out custom sill height labels, ceiling heights and so on.

I planned to define a 'default' height discount, and I intend to leave space so my colleagues can enter the 'atypical floors' discount on their specific projects.

(Sorry about the portuguese, if anything, ask me)

I want it to be structured kinda like that - a default value, and atypical values are stated. It wouldn't be much nice to have to enter each of all stories height discount manually (one by one). And even less nice to have it all in a single line of expression.. But I can't really get how the multi-line property expressions work. I tried inverting the order. It keeps not functioning correctly.

Anyone can give me a hint? Thanks a bunch! 🙂