ant-contrib-1.0b3.jar中的foreach循环方法怎么用啊?!
<taskdef resource="net/sf/antcontrib/antcontrib.properties" classpath="current.path" />
<target name="test">
<foreach target="do-jsp-compile" list="a,b,c,d,e" param="letter">
<sequential>
<echo>letter @{letter}</echo>
</sequential>
</foreach>
</target>
运行任务的时候,提示错误:\AinxAnt\build.xml:50: The <foreach> type doesn't support the nested "sequential" element.
应该怎么做啊?