如何解决此错误“必须声明标量变量@vPath”？

Question

DECLARE @vPath VARCHAR(200);
SET @vPath = CONCAT('C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER
\MSSQL\Backup\AdeventureWorks',
REPLACE(REPLACE(CAST(GETDATE() AS VARCHAR), ':', '_'),'', '_'), '.bak');


--PRINT @vPath;

BACKUP DATABASE AdventureWorks2016
TO DISK = @vPath;