invoke remoting endpoint crossdomain

I need to invoke work process through remoting endpoint in flex app from other domain.

my flex app is on : http://localsever.me.com:9001/test.swf

in this test.swf, I try to invoke a process that is throught remoting end point
http://remote.me.comremoting/remoting/messagebroker/amf

I got error message with "Security Sandbox Violation" error.

Has anybody done this before successfully?

Thanks,

Joanna Gao