xacro properties

I'm trying to use the mesh from the [realsense camera](https://github.com/intel-ros/realsense/tree/development/realsense2_camera) in my .urdf.xacro file and getting `name 'd435_cam_height' is not defined` or similar. This is a MWE to show the issue: They define the property I'm trying to use with the following snippet: ... ... ... Is it not possible to use properties defined inside a macro in another xacro file? I tried with namespaces, I tried to search for similar questions and I did the tutorial and looked for similar robots with no luck. Of course using 0.025 directly solves the issue, it's beside the point of using properties then.