You should be able to replace the movefile statement with filerename. In fact, I just verified that in Panorama X filerename does everything that movefile did, so I am making movefile a synonym of filerename. In other words, in the next release of Panorama X, movefile will work. But to get it working now, just change to filerename.
As for Tab Down, that feature is not yet implemented in Panorama X. However, in your application it isn’t doing anything anyway. Tab Down only works in the data sheet, you are trying to use it in a form. Hmm, maybe RoomNumFill is a View-as-List form? Even if so, in Panorama X View-As-List forms do not support data entry. So you probably just want to get rid of the tabdown statement there.