If I call the following stored procedure with ("user","password"), it returns one matching record, like it's suppose to.

CREATE Procedure VerifyLogin
	@UserID varchar(50),
	@Password varchar(50)
)
As
	select AccountID, 
		FirstName + ' ' + LastName AS Name
	from accounts
	where UserID = @UserID
	and Password = @Password

	return @@ROWCOUNT

<B>However, if I call this next stored procedure with ("user","password",1234,"Name"), it returns no matching record.</B>

CREATE Procedure VerifyLogin
(
	@userid varchar(50),
	@Password varchar(50),
	@AccountID int,
	@Name varchar(100)
)
As
	select @AccountID = AccountID, 
		@Name = FirstName + ' ' + LastName
	from accounts
	where userid = @userid
	and Password = @Password

	return @@ROWCOUNT

What am I doing wrong in regards to assigning value to variables as parameters?