Whether the agreement was enforceable and whether A is entitled to damages are matters of substance and would be determined on the basis of the substantive law of contracts.
Whether the agreement was enforceable and whether A is entitled to damages are matters of substance and would be determined on the basis of the substantive law of contracts.
至于上述协议是否可执行以及甲方是否应得到损失赔偿则是实质性的问题，将取决于实体的合同法。