Sitecore rule engine action to register a goal

RegisterGoalAction.cs

public class RegisterGoalAction<T> : RuleAction<T> where T : RuleContext
{
    public ID GoalId { get; set; }

    public override void Apply(T ruleContext)
    {
        if (!Tracker.IsActive || Tracker.Current.CurrentPage == null) return;
        var goal = (PageEventItem)Context.Database.GetItem(GoalId);
        if (goal != null)
        {
            Tracker.Current.CurrentPage.Register(goal);
        }
    }
}