Automating Software Instrument parameters


Hello, I know I used to do this with Logic 9 (maybe even 8?) but in Logic X 10.4.8 I can't seem to find the answer.
I want to automate the cutoff parameter of an ES1 instantiation. I know it's "F 2 10 xx" because I've hooked up a monitor while adjusting cutoff by hand, and that's what it's outputting. But I can't remember how to generate "F 2 10 xx" messages… or even what this fader(?) is called!

Any help most appreciated.

And Happy New Year!!