Hi!
Are you creating a map-editor, I suppose?
It's interesting. I have an idea HOW TO do it, but have never tried :]
My map-generator is abandoned right now. Funny, it was my first big project on Construct.
Now I'm trying to do another thing.
(and it's neccessary to create map-editor but not right now)
So, it's good for both of us to communicate.