SQL Server xml.modify删除方法

我从节点中删除属性时遇到问题.

例:

DECLARE @processID int
SET @processID = 8

DECLARE @xml XML
SET @xml = 
'
  
    
    
    
    
  
  
'

SET @xml.modify('delete (/Process/Shapes/Shape/@subProcessID[/Process/Shapes/Shape/@subProcessID = sql:variable("@processID")])')
SELECT @xml