求助批處理修改文件內容的問題

@echo off
Chcp 65001>nul
copy Agent.xml Agent.xml_bak
ren Agent.xml Server.txt
setlocal Enabledelayedexpansion
for /f tokens=* %%a in (Server.txt) do (
set var=%%a
set var=!var:http://www.baidu.com/ss/avvin.doc=http://10.180.221.151:8081/index.htm!
echo !var!>>Server_wq.txt
)
endlocal
ren Server_wq.txt Agent.xml
del /q /s Server.txt
pause
nclick="copycode($('code0'));">復制代碼

以上這個代碼修改是成功的，可以替換文件內容相應內容。--------------------------------------------------------------------------------------------------------------如下代碼修改文件內容失敗

@echo off
Chcp 65001>nul
::Chcp 936>nul
copy Agent.Config Agent.Config_bak
ren Agent.Config Config.txt
setlocal Enabledelayedexpansion
for /f tokens=* %%b in (Config.txt) do (
set var=%%b
set var=!var:<add key=IsLocalLogin value=False />=<add key=IsLocalLogin value=True />!
echo !var!>>Config_wq.txt
)
endlocal
ren config_wq.txt Agent.Config
del /q /s Config.txt
pause
nclick="copycode($('code1'));">復制代碼

所有文件我打包上傳了，請大哥幫助解決一下，不勝感激