使用批处理for循环echo写多个文本文件的错误求解

rem QCIF 时域1/2下采样
set num=(ab cd ed)
for %%a in %num% do
(echo ^<?xml version="1.0" encoding="UTF-8"?^>
echo ^<note^>   
echo   ^<to^>Tove^</to^>   
echo   ^<from^>Jani^</from^>   
echo   ^<heading^>Reminder^</heading^>  
echo   ^<body^>Don't forget me this weekend! %%a^</body^>
echo ^</note^>) >E:%%a.xml
pause