[PD] Problem with object shell or popen

[Jack]

Hello,
I try to send the message "curl -f -O "http://www.xxxxx.com/ 
image.jpg" to object [shell] or [popen] but nothing happen !
I send before the message "cd /Users/images" to use the directory  
"images" to download.
Any ideas ? Thx

PD-0.39.2-extended-rc2
macos 10.4.8

Jack