Type Cmd-! (⌘!)

Hi,

I'm writing a macro to create projects in OmniFocus from pre-existing templates, and one of the steps is to type cmd-! (this converts a list of tasks to a project). I thought this would be cmd-shift-1, but that's... cmd-shift-1. How do I get cmd-! as a keystroke?

By the way, I know I can select the corresponding menu item with Keyboard Maestro, and this solution works fine, but I'd still like to know how to do it 'properly'.

Thanks.