Anderson,a City Employee,collected Garbage Along Smyth's Street on Thursday of Each

True/False

Anderson,a city employee,collected garbage along Smyth's street on Thursday of each week.One day Smyth said to Anderson: "You have done such a good job; I will give you $10 when you come by next week." The next week,when Anderson made his regular garbage pickup for the city,he met Smyth and asked for the $10.Smyth refused to pay.Is Smyth legally required to pay the $10?