Security.loadPolicyFile stop by firewall

Hello Guys,

I try to use  Security.loadPolicyFile() and Flash Player goes on error

because my firewall stop it. It's ok.

But, when I put the method into the Try{} Catch{} statement, I can not

intercept the error... why?

Could some one help me?

Thank you. Fabio.

try{

     Security.loadPolicyFile("www.imarkgroup.org/crossdomain.xml");

}catch(er:Error){

     trace(" Firewall could stop your request...  ")

}