Well, i solved the problem by modifing my own class:
@Install(precedence = Install.FRAMEWORK+1) and copied the source code of Portalidentity into my own class to combine both classes into one.
I also though about extending, but importing portalidentityclass is a little bit complicated (because Seam web Project). I also thought about modify the sourcecode of portletbridge, but this seems not necessary.
Well, there is another error, but i haven't found the reason yet.