how to autostart stratum proxy at headless raspbian?

I tried this:

# /etc/rc.local
# Stratum proxy autostart script
/home/pi/stratum/stratum-mining-proxy/mining_proxy.py -o pool-us.50btc.com -sp 3332 -gp 8334
/home/pi/stratum/stratum-mining-proxy/mining_proxy.py -o stratum.btcguild.com -sp 3330 -gp 8335
#


it doesnt work

if i just write in ssh  /home/pi/stratum/stratum-mining-proxy/mining_proxy.py -o pool-us.50btc.com -sp 3332 -gp 8334
and in another ssh terminal  /home/pi/stratum/stratum-mining-proxy/mining_proxy.py -o stratum.btcguild.com -sp 3330 -gp 8335

it works fine.

why? is my location wrong? is my syntax wrong?