RTL & Rangefinder issue


Hexacopter with herelink and cube black. MP for config.

I cant get “green light” for arming. i have check´d all on arming check.

I get the message, RTL height (5000cm) greater than rangefinder (benewake mini+) max (value 600cm), resolve issue to be able to arm.
Only way i have figured out to get bird into ait is by lower the RTL value below my GNG max (600cm), so i have RTL now set to 500cm, not ideal,right?
Any ideas?