Can't get all parameters from windows

When I try to retrieve parameters from windows it dosn’t seem like i’,m getting all the parameter, ex. I have made a parameter for glass area that I can’t see anywhere, what am I doing wrong?

 

The parameters that are showing in your graph are probably only the instance parameters of the window. Your glass area property is a type parameter so it won’t show in the list of instance parameters. To list your type paramters you first have to get the type of your instance and then get the parameters of the type instead of the instance. Hope this helps.