Would like members to delete their own Wall comments

I went into the member permissions and set it so members could delete Wall Comments and it set it so members could delete ALL wall comments. I noticed they can delete their own replies to those comments but not the original wall comment. Does anyone have any ideas on how to allow this?

Thanks

In administration:

go to Advanced settings> Profiles

Check last option, "Enable possibility to delete profile comments by profile owner:"

ah ok perfect thank you!