I've seen this video a couple of times
https://yamahasynth.com/learn/montage/how-to-use-montage-and-modx-in-daw
but I'm having a good bit of trouble translating the steps to a similar setup in Logic Pro X.
Looks like you posted a Modx/Modx+ queston in the Montage forum. You will get better response if you move it to the Modx forum.
See page 18 of the Supplementary manual for step by step instrucitons
https://usa.yamaha.com/files/download/other_assets/8/1219148/modx_en_sm_c0.pdf
Meanwhile you might want to check out one of these videos
https://www.youtube.com/watch?v=jghQGR1ts0E
35:20 How to integrate Yamaha MONTAGE and MODX with Logic ...
https://www.youtube.com/watch?v=pT-4i1Is_gE
DAW remote - Yamaha MONTAGE and MODX with Logic Pro X 2023