What?
'Sorry Menikos,
I'm sure we'd all like to help you but I, for one, can't understand your question.
Are you talking about converting a foreign CPL to a JAA CPL? Or are you talking about converting a JAA CPL to some foreign CPL, if so which one.
Or are you hoping to upgrade from a CPL to an ATPL (virtually impossible without doing the whole thing over again).
Give us some more information and I'm sure the Pprune community will do its best to reply.
Broomstick.