ethOS and RX480 Config Assistance

Hi! every body, i'm new in this forum
i have a problem with ethos, i have one rig with sapphire nitro + rx 480oc 4GB i updated ethos to the last version 1.1.2 from 1.1.1
but i change the OC to different parameters like


maxgputemp 85
stratumproxy enabled
proxywallet 0x0bdC4F12fB57d3acA9C3cF72B7AA2789A20d27f2
proxypool1 us1.ethermine.org:4444
proxypool2 us2.ethermine.org:4444
flg e14064 --cl-global-work 16384 --farm-recheck 200

driver e14064 amdgpu

#pwr e14064 4
fan e14064 70
cor e14064 5
mem e14064 1


but it not accept the cor or mem parameters
i use different numbers but always got the the same error " Core setting 5 out of range "

from the gethelp from ethos i get this info

Fri Oct 14 15:11:39 UTC 2016 - ethOS-overclock started
GPU0:01.00.0:Radeon RX 480:113-2E3471U.S57:SK Hynix H5GC4H24AJR
Allowing 15 seconds for X to startup.
Applying Rig Specific Fan settings to GPU0 Value: 70
Applying Default Powertune (DPM State) settings to GPU0 Value: 4

Rig Specific Core setting 5 out of range for GPU0, amdgpu accepts 0-20 for core clock adjustment percentage, Not changing core clock.
Rig Specfic Memory setting 2 out of range for gpu 0, amdgpu accepts 0-20 for memory clock adjustment percentage, Not changing memory clock

Applying Default Powertune (DPM State) settings to GPU0 Value: 4
Applying Rig Specific Fan settings to GPU0 Value: 70
------------------------------------ Ethos Overclock Summary ------------------------------------
|-GPU 0 | INVALID Core: 0 INVALID Memory: 0 Default Powertune: 4 Rig Specific Fan: 70
|_______________________________________________________________________________________________



i appreciate your help