Lock midi in Logic Pro 11?

I am currently trying the demo (I have 12 days left) and trying to decide if I want to make the switch from Studio One.

I am trying to lock the midi, the manual say's: "To prevent editing MIDI in Logic Pro, you can lock the MIDI region by right-clicking on it in the Piano Roll Editor and selecting "Lock" from the context menu"

But I cannot see that option in the context menu. I can lock horizontally with "SMPTE Lock" but I want to stop vertical note movement as well.

Thank you for any help.