Ask about access hidraw device

Hello, I try to make Escribe apllication into snap. Everything work fine in devmode, but got error when accesing hidraw device when using “strict”.

I just can’t understand how hidraw interface is working. I’ve added “hidraw” into plugs but not working, always got below error.

= AppArmor =
Time: Jun 17 22:37:36
Log: apparmor="DENIED" operation="open" profile="snap.escribe-suite-beta.escribe" name="/dev/hidraw2" pid=289343 comm="mono" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
File: /dev/hidraw2 (read)
Suggestion:
* add 'hidraw (with gadget or core support)' to 'plugs'

When use manual connect always error no interface slots, Is there any way to make it working?