I edited a file, but my changes don't show up *
Did you upload it to ePembelajaran@UMT?
The files on your computer or on your H: space, and the files within ePembelajaran@UMT are completely independent. If you change a file on your H: space, for example, it remains unchanged on ePembelajaran@UMT until you upload it.
Cure: Turn editing on, and click the Update button 
alongside the File in ePembelajaran@UMT. Click Add... to re-upload the file, and choose to overwrite the old one.