XQuery - Chinese characters

can tell me why statement fails?

set

arithabort on
update xxxxxx
set myxml.modify('insert <開關></開關> after (/instance/說明/關)[1]')
where id= 1


the error is:
xquery [xxxxxx.myxml.modify()]: syntax error near 'insert', expected identifier.

thanks!

since deal unicode characters, prefix expression n'.
here example:

declare @x xml select @x = n'<instance><說明><關></關></說明></instance>' set @x.modify(n'insert <開關></開關> last (/instance/說明/關)[1]')  select @x   /* <instance><說明><關><開關 /></關></說明></instance> */ 

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beyond relational

SQL Server  >  SQL Server XML