SSIS: Watch List, where are you?

Something that i always forget when developing SSIS packages is how to use the watch list. Unfortunately, its not quite as simple as "right click" variable, "add to watch list".

It appears that you can only activate the watch list once you add some breakpoints to the packge and the package is debugging. In other words, you can't set this stuff up ahead of time. When you start debugging, the watch window shows in Visual Studio and you can drag the variables to this window.