flash send request to another server

hi i am sending a flash reqesut to a url when i make request from local computer its working but when i upload on my server its not working i think flash is not sending request from my server to another server

//it working 
myvars.sendAndLoad("http://mywebsite.com",myvars,"GET");
gotoAndPlay("thankYou");

//its not开发者_开发知识库 working 
myvars.sendAndLoad("http://anotherwebsite.com",myvars,"GET");
gotoAndPlay("thankYou");

any ideas thanks

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You need a crossdomain file on your server http://kb2.adobe.com/cps/142/tn_14213.html