Gc Log in Sun Glassfish Server

Hi,

I want to generate gc.log file in my application server.It was generated gclog when i putting following command in JVM option in glass fish server.

-Xloggc:${com.sun.aas.instanceRoot}/logs/gc.log

But i want to store gc log /home partition of aix server

Kindly help me

Regards,
J Manivel