cannot mount ext partitons (or anything) under lollipop topic

Yes i can't mount any partiotion of the sd card to the phone under lollipop, i tried everything, this is because i can't use link2sd or foldermount, so i tried using commands in terminal emulator like mount -t sdext4 -o rw /dev/block/vold/179:66 /data/sdext2 , the command seems to works at first but the folder is still empty, i used the directory bind commands lime mount -o bind but this isn't working either, it seem that lollipop broke something in this phone or is using another metod.