you can use automation in bidule, go to the Parameter window in bidule,
you can link the (vsti-vst) parameter to one of the 128 bidule parameters, then the parameters are displayed in bidule (in your host,daw where you inserted bidule)

What daw do you use??? different daws require different tweaks for this,

well,
if you use live here is some tut

 

As Studio555 and One Reason told you, in the last version of MAGMA one of this effects is a plugin chainer! *yes*

For Mac there's the AU version cracked elsewhere. Everything is ok but i had some problems with plugin
chainer (i don't know if this happen to anyother too) ... it doesn't keep the chained plug-ins after reloading
the project (i reported but nobody said a thing about it (even not the cracker). But for sure the pay per use
version will work just fine! )