Passing args from ant script to a jacl

[sitaram8]

Hi,
I am trying to automate the installation of the application on WAS 5.0 using ant tasks. I am newbie and would like to know how can I pass the arguments from a ant task to a jacl script ?
I tried like this

<wsadmin
properties="jacl.properties"
script="create_datasources.jacl"
wasHome="${was.home}"
conntype="SOAP"
host="${Host}"
port="${Port}"
user="root"
password="root123"/>
</target>

hoping that the "create_datasources.jacl" will pick up the arguments from jacl.properties file. But its not happeneing ..
Please help ..