I was trying to set PATH enviroment variable on an ant build.xml through this answer.
It works on cygwin but not on cmd or PowerShell.
Some information:
Apache Ant 1.6.5 (I know there is a newer version (1.8.4), but for internal reasons I have to use this older version)
Powershell v2.0
cmd v6.1.7601
cygwin 2.774
Windows 7
Unfortunatelly was an ant bug related to 1.6.5 version. I was able to update to 1.8.4 and everything works fine.