All fx of C2 must be in effects drawer.... this mean you need 2 file inside... for example; effect.fx and effect.xml
to use page fx ; open new project .. insert sprite object .. load picture into this sprite
so select the page fx for this sprite; then you can manipulate fx variables on the left... with mouse object on your project.
every thick parameter 0 to mouse.x/100.0 or something ....
Ps: i have mailed the guy to port this : http://gigatron3k.free.fr/html5/C2/FX/pagecss/
but not received answer... i can't make plugin yet.. cause it's shareware...