MySql变量减速错误

Question

有sql语句从工作班得很好但是当我使用它c＃代码我收到此错误

  

{“在命令执行期间遇到致命错误。”}       {“必须定义参数'@receiverID'。”}

sql是

INSERT INTO arabaicsms.receivers
    (Name,Phone,Email)
VALUES
    (@Name,@Phone,@Email);

SET @receiverID = (SELECT MAX(ID) FROM arabaicsms.receivers); 

INSERT INTO arabaicsms.roles_recivers 
    (FkRolesID,FkReceiversID)
VALUES
    (1, @receiverID), (8, @receiverID) ; 

INSERT INTO arabaicsms.receiver_classes
    (FkRevceiverID,FkClassesID)
VALUES
    (@receiverID, 50) ; 

INSERT INTO arabaicsms.groups_recivers
    (FkGroupsID,FkReceiversID)
VALUES
    (4,@receiverID),(5,@receiverID);

SELECT @receiverID

不是什么可能是问题，但任何想法都赞赏