DayzLemy

Hey everyone! So I have the Arma 2 DayZ Mod on steam and I also have DayZ Commander. I Want to know if there any way that I can make my play time count on the Arma 2 Dayz Mod and not on Arma 2 Operation Arrowhead. I already selected the two options of Lauch using steam and replace with beta patch, but the play time counts on operation arrowhead. Any help please? Thank you! :D