Cannot send data via i2c to master raspberry pi

Projects Networking, Protocols, and Devices
8

Other news.
Changing the code from:

void i2cTransmit() {
  //called by event
  byte numBytes = 0;
   
  switch (command) {
    case 0x90: 
      numBytes = 4;
      break;
  }
  if (numBytes > 0) {
    Wire.write((byte*)txTable, numBytes);
  }
}

to:

void i2cTransmit() {
  //called by event
  byte numBytes = 1;
  Serial.println("Handle the command request from Master.");

  /*
  switch (command) {
    case 0x90: //requested HSB
      Serial.println("Master requested HSB.");
      numBytes = 4;
      break;
  }
  */
  if (numBytes > 0) {
    Serial.print("Send num bytes: ");
    Serial.println(numBytes);
    //Wire.write((byte*)txTable, numBytes);
    //Wire.write(txTable,4);
    Wire.write(txTable[0]);
    Wire.write(txTable[1]);
    Wire.write(txTable[2]);
    Wire.write(txTable[3]);
  }

is working!
It remains only the why I can't use the "command" variable.