Convert cache partition to F2fs on Cm13 ?

Hi all ,
I tried to convert the cache partition to f2fs on my xt1068 but kept getting stuck on boot animation I followed the XDA conversion guide but still failed.my data partition is f2fs.does anyone know if cm13 support cache partition on f2fs or I am doing something wrong.

Steps I followed
Booted in to twrp latest
Made a backup of cache partition
Changed it to f2fs
Put a tick on use rm_rf instead of formating
Then restored cache
It got stuck on boot animation
I also tried wiping but still no joy
Plz help

Thanks in advance

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