When entering the below command the response is --gekko-mine2  unrecognized command

cgminer -O stratum+tcp://us-east.stratum.slushpool.com:3333 -u xxxxx -p xxxxx x --suggest-diff 512 --gekko-compacf-detect --gekko-compacf-freq 500 --gekko-start-freq 400 --gekko-mine2 --gekko-tune2 60

I am running cgminer version 4.12.0

Please advise what is wrong and how to correct this.