assignment as an action

I'd like to do something like

        FOLDER=inbox

        :0
        * ^From: toto
        FOLDER=toto

        :0
        * ^From: tata
        FOLDER=foo

        ...

        :0
        | rcvstore +$FOLDER

but this doesn't work because after

        FOLDER=foo

the processing is stopped. I tried adding "c" in the options after the ":0",
but but it didn't really help because the assignment is then done in
another fork of computation and doesn't influence the subsequent rules.

This is with procmail-3.10. Am I dense or is this impossible or what ?


        Stefan