rexec and setting env variables on remote host

[Z W]

Hi

I tried using rexec task to invoke a shell script.

<rexec userid="${aname}"
           password="${apass}"
           server="${host}"
           command="cd ${i_dir}; echo $A_HOME $JDK_HOME" />

The output is as follows:
    [rexec] /af/gord
    [echo]

But when I check the local host of this unix box, the variables are set in
.profile. When echoed, they are displayed.

How do I make sure the shell sets these variables in Ant script using rexec
? source command isn't available on the unix box.