How to set Acl for User class in cloud code using before save trigger?

Hello here is my cloud code

Parse.Cloud.beforeSave(Parse.User,async (request)=>{
      const user = request.object;
      const t = user.get('tProfile');
      const s = user.get('sProfile');
      if (!t && !s) {
        user.setACL(new Parse.ACL(user));
      }else{
        console.log('Old user detected');
      }
    });

As you can see I am trying to set Acl for a new user signing up with a before save handler, but the error that I get is UserID must be a string. So my question is how can I set an acl for a new user who is just signing up ? Thankyou

So i finally found a way to do so. In the Before save handler just use this code :)

    Parse.Cloud.beforeSave(Parse.User, async (request) => {
       var newOjb = request.object;
       if (!request.original) {
             newOjb.setACL(new Parse.ACL(Parse.User.current()));
        }
    });