HTC One M8 lollipop SD Card permission fix

Hey i updated my htc one m8 to lollipop and rooted it but i have programs that requires the ability to write to external SD card like FileMount but every time i lunch FileMount it tells me that it cant write to SD card and the app it self has a feature to enable it automatically but it requires a reboot but still even after reboot the same problem occurs when i was on android 4.4.4 i tried instaling sd fix but that thing didnt work but i installed Xposed installer and installed HandleExternalStorage module and it worked great for me but i cant use xposed installer on lollipop as the developer says it might not be possible for Xposed installer to be available for lollipop my device is 16 gb only and its really not enough for me and i rely on FileMount for my storage issues