s-function builder Simulink for Arduino

I am trying to build an s-function builder for the LSM6DS3 IMU with the following Arduino code:

#include <Arduino_LSM6DS3.h>
 
void setup() {
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  if (!IMU.begin()) {
    Serial.println("Failed to initialize IMU!");
    while (true); // halt program
  } 
  Serial.println("IMU initialized!");
}
 
void loop() {
  float aX, aY, aZ;
  float gX, gY, gZ;
  const char * spacer = ", ";
 
  if (
    IMU.accelerationAvailable() 
    && IMU.gyroscopeAvailable()
  ) {      
    IMU.readAcceleration(aX, aY, aZ);
    IMU.readGyroscope(gX, gY, gZ);
    Serial.print(aX); Serial.print(spacer);
    Serial.print(aY); Serial.print(spacer);
    Serial.print(aZ); Serial.print(spacer);
    Serial.print(gX); Serial.print(spacer);
    Serial.print(gY); Serial.print(spacer);
    Serial.println(gZ);
    delay(1000);
  }
}

Data Properties, I deleted the input ports since I will not have any, and added an output port with a random name with uint32 (only because it was suggested in the reference example link below).

I put this in the Libraries Includes:

#include <math.h>
# ifndef MATLAB_MEX_FILE
# include <Arduino.h>
#include <Arduino_LSM6DS3.h>
# endif

Outputs:

if(xD == 1)
# ifndef MATLAB_MEX_FILE
    ana[0] = analogRead(A0);
# endif

Update:

if (xD[0] != 1)
xD[0] = 1;

When I compile it, I get the following error code:

C:\Users\ASDFGHJKL\Documents\MATLAB\Examples\R2020a\IoT_wrapper.c: In function 'IoT_Outputs_wrapper':
C:\Users\ASDFGHJKL\Documents\MATLAB\Examples\R2020a\IoT_wrapper.c:47:4: error: 'xD' undeclared (first use in this function)
 if(xD == 1)
    ^~
C:\Users\ASDFGHJKL\Documents\MATLAB\Examples\R2020a\IoT_wrapper.c:47:4: note: each undeclared identifier is reported only once for each function it appears in
C:\Users\ASDFGHJKL\Documents\MATLAB\Examples\R2020a\IoT_wrapper.c:52:1: error: expected expression before '}' token
 }
 ^

What should I modify to get this to display all six values?

Reference:

https://medium.com/@eestuffs/reading-analog-signal-with-arduino-due-and-simulink-part-1-tutorial-6b1703bbfcdb

[SRance]

Your outputs needs to specify the element, i.e: if(xD[0] == 1)

You also need to bracket your functions with the { } on the outputs and update.

For reference, even if you have a constant you will need to reference it like a C array.