soapUI: can't record scenario with https and amf

Hi,
I have to test the performance of a flex site, I am trying to do it with loadUI and soapUI.
This flex site uses https and amf.
When I'm trying to record my functional scenario with soapUI, it does not work. soapUI only records the first https request and does not record my amf requests.
Is it possible to record amf requests with soapUI ?
If yes, how to do it ?
Thank you for your answers.
Regards.