Audio Fade In / Out Key Command

Hello All,

I am looking to set up a key command for different audio fade in / out lenghts that can then be used in Metagrid. This would be a very helpful time saver in my work flow and im sure others, to not have to drag the clip fades all the time. I have tried to find a way to set this up in the Logical Editor and have been unsuccessful. Any input or assistance would be greatly appreciated.