anchor.diff:                  {
                       Definition = Cash { 
                           Direction = if direction = "Buy" then 1.0 else -1.0
  -                        Price = strike
  +                        Price = float strike
                       }
                       Pricing = None
                   }
  
positive.code:                     Definition = Option { 
                          Direction = if direction = "Buy" then 1.0 else -1.0
                          Expiry = DateTime.Now
                          Strike = strike
                          PurchaseDate = DateTime.Now
                          Kind = if kind = "Put" then Put else Call
                          Style = European
  
negative.code: 
      type LegViewModel(l:Leg) = 
          let mutable leg = l
          let mutable strike = "0.0"
          let mutable expiry = "test"
          let mutable kind = "Option"
          let mutable direction = "Buy"       
  