import os, sys

f = open(os.path.dirname(os.path.realpath(__file__)) + "\log.txt", "a")
msg = "first arg is " + sys.argv[1] + "\n"
print(msg)
f.write(msg)
f.close()

Also, please try running your script from a cmd prompt with red or 80 as the parameter to see if it's erroring. I wonder if it's erroring and you're just not seeing the output so you don't see the error.

import pyttsx3
import threading
import sys
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume, IAudioEndpointVolumeCallback
from comtypes import CLSCTX_ALL, COMObject

from ctypes import POINTER, cast

class fala:
    def __init__(self,msg,voice=0):
        threading.Thread(target=self.thread,args=(msg,voice,)).start()
    def thread(self,msg,voice):
        tts = _TTS(voice)
        tts.start(msg)
        del(tts)
    
class _TTS:
    engine = None
    rate = None
    def __init__(self,voice):
        self.engine = pyttsx3.init()
        self.engine.setProperty('volume',1.0)
        voices = self.engine.getProperty('voices')
        self.engine.setProperty('voice', voices[voice].id)
    def start(self,text_):
        self.engine.say(text_)
        try:
            self.engine.runAndWait()
        except:
            fala(text_)


class AudioEndpointVolumeCallback(COMObject):
    _com_interfaces_ = [IAudioEndpointVolumeCallback]

    def OnNotify(self, pNotify):
        print('OnNotify callback')

list2 = sys.argv[1:]
devices = AudioUtilities.GetSpeakers()
interface = devices.Activate(IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))
callback = AudioEndpointVolumeCallback()
volume.RegisterControlChangeNotify(callback)



try:
    if isinstance(int(sys.argv[1]),int):
        fala('volume definido para ' + str(int(sys.argv[1])))
        volume.SetMasterVolumeLevelScalar(int(sys.argv[1])/100,None)
except:
    fala(' '.join(list2))

So if I say a number it changes the volume, but if I say a color or "Turn on/off" it says On, Off or the Color. (Basically it tries to say it out loud if the parameter is not a number)

Now, it only works during On and Off. All the colors or the numbers are not working as valid parameters.

This is how it is coded in TriggerCMD currently:

 {
  "trigger": "Protocolo",
  "command": "python \"D:\\Programming\\Python\\teste vozes.py\"",
  "offCommand": "",
  "ground": "foreground",
  "voice": "Protocolo",
  "voiceReply": "",
  "allowParams": "true"
 }

Are you using a script? If so can you paste it here?

Do you have parameters enabled on the command?

Is your script logging the parameter? If you run the script manually with a number parameter does it work?