How can I update a user's EnableDisplayInMemberList?

It's not an int, its a boolean value(true/false).  

I have tried the following, and none of them work:

#set ($userResponse = $core_v2_user.Update("%{ EnableDisplayInMemberList = false, Id = $user.Id  }"))

and

#set ($userResponse = $core_v2_user.Update("%{ EnableDisplayInMemberList = 'false', Id = $user.Id  }"))