Title 9, Chapter 2, Section 20
(a) As a general rule, an action on a contract, whether the contract
is expressed, implied, by parol, under seal, or of record, shall be
brought in the name of the party in whom the legal interest in the
contract is vested, and against the party who made it in person or
(b) The beneficiary of a contract made between other parties for his
benefit may maintain an action against the promisor on the contract.