Apple Logic Pro /LogicExpress Discussion

I've only had to do this on a couple of occasions, but I often need to switch between 32bit and 64bit depending on the plugins I'm using. 

Is there any easy way to toggle between the two load types?

Like a script or something. I tried assigning aliases to different formats but that didn't work. 

Or what is the scripting language for OSX, there must be an easy way to do this. 

Cheers...