Arturia MiniLab MK II issues with gaining control over FL Studio

[Stary Kret]

I have the Arturia MiniLab Mk II keyboard. This controller is not listed in the MIDI Settings Controller Type. I wanted to achieve the effect of using pads 7 and 8 to control channel changes in the Channel Rack.

I created a script with the help of AI, which looks like this:

import midi
import ui

def OnMidiMsg(event):
if event.midiId == midi.MIDI_CONTROLCHANGE:
if event.data1 == 20: # CC #20 for previous channel
ui.previous()
elif event.data1 == 21: # CC #21 for next channel
ui.next()
event.handled = True

I installed it in C:\Program Files (x86)\Image-Line\FL Studio <version>\System\Hardware specific\ as recommended by AI. I didn't achieve anything, and additionally, after clicking Refresh device list, I get the message: "Unknown external error."

Just two days ago, I had no knowledge of MIDI scripts, Python language, or the technical aspects of music production. Perhaps the script is incorrect, or maybe I placed the file in the wrong location? I'm not sure. I just wanted to be able to change channels using my controller.

Does anyone have any ideas on how I could achieve this differently? Please help me with my problem.

[HDSQ]

I don't think that's the right installation loc...