Just review my FCTM and found this....thanks you still
Cold Temperature Altitude Corrections
In the design of RNP AR procedures, the allowable temperature range is normally specified and the procedure design accounts for operations and obstacle clearance for any temperature within the specified range. If the actual temperature is within the specified temperature range, the pilot can fly the RNP AR procedure and there are no temperature corrections needed (or allowed). If the actual temperature is outside the specified temperature range, then the crew cannot fly the RNP AR procedure.