Parachute Manual Deploy issue with v4.1.4 and v4.1.5

I want to deploy parachute manual using radio and Assign Ch # 9, but When we trigger parachute Switch from radio, its showing Parachute Low Or High. But Servo not triggered. So please Support how to Configure Parachute manually in case of emergency and also in Auto mission mode parachute Deploy.

If we assign SERVO9_FUNCTION as 59 and RC9 as a 22 then working but when we assign SERVO9_FUNCTION as a 27(Parachute) then it not working.