Check my C2 Preset for explanations on how to do so! I used iCalBuddy, you'll find the scripts you'll have to modify in order to get the result 
Don't have my MacBook here right now, so I can't copy/paste the script 
Check my C2 Preset for explanations on how to do so! I used iCalBuddy, you'll find the scripts you'll have to modify in order to get the result
Don't have my MacBook here right now, so I can't copy/paste the script