[Seaside] interacting with iframe

[Cédrick Béler]

Hi

is it possible to interact with iframe within seaside.

With WARenderCanvas, we can display an iframe like in WAIframeTest where 
it is displaying a counter  but I'd like to display an external page 
(that works fine) and get some hidden input back (within the iframe)

Is there any way to do that (accessing an hidden input in the iframe)?

Thanks ;)

Cédrick