name 

systemName 

Yes 

No 

The name of the system type component. 

installPath 

String 

No 

Yes 

The install path of the desired component. The value is converted to universal format prior to component resolution. 

host 

string 

No 

Yes 

The host on which the component is installed. Defaults to the current host. See the <retarget> step host attribute for details.