glassfish not seeing an executable in PATH

Hi,

I am running a Perl script under glassfish3.1.2.2 and it cannot "see" a particular executable (ncdump from NCL). This binary is perfectly accessible at the command line where env|grep PATH shows ~/NETCDF/bin is in PATH and thus I can call "ncdump" from the command line. How can I make this portion of the PATH visible to glassfish? Via asenv.conf? If so what is the variable called?

thanks,
Steve