Open selection in custom editor

[Reve_Etrange]

Hi guys,

Basically I would like to create a shortcut/key binding in my favorite file manager (XYplorer, check it out it's awesome) to my favorite file editor (Sublime Text, brilliant too), editing the currently selected files.
Yeah, I know it must be pretty easy to do, but I did a quick search and even tried binding a key to "User/Open With", to no avail. I don't want to change global or XYplorer file associations, btw.

So, what's the best way to do that?

[highend]

Help -> UDC
and the examples for the openwith command explain all necessary steps.
What _exactly_ isn't working?

[Reve_Etrange]

Aw, I was editing 'Tools/Customize Keyboard Shortcuts' instead of 'User/Manage Commands' :p
Got it working.