cannot get ssh meminfo to work on Solaris

Hi, I'm getting the following errror message when trying to run the SSH Meminfo sensor on a Solaris 8 machine, the SSH Disk Free, SSH Load Average and SSH INodes Free sensors are working fine with the same credentials, the commands in error also work fine when I run them from the command line

"The host's system is unable to process PRTG's command: "prtconf | grep Mem | awk '{printf "MemTotal: %s kB\n", $3 * 1024}' && vmstat -p | tail -1 | awk '{printf "SwapTotal: %s kB\n", $1;printf "MemFree: %s kB\n", $2}' ". (code: PE096)"