access a function inside embbedpano23.swf

[Natasha]

hello there,

i'm working in a complex project with embbedpano and have one trouble to fix :

in my main .fla (embbedpano.fla with external .xml file) i've a function : myfunction(), and for a special reason i want to call this function from my external params.xml,
is this do-able ?
how to acess and triggger this function ?

Thanks boys.