#Help setting a value in a dynamically allocated 3D array to a specific value

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warm mountainBOT
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@final tangle

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final tangle
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!format

warm mountainBOT
final tangle
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!format

warm mountainBOT
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#include <time.h>
#include <iostream>
using namespace std;

class Coord {
 public:
  int x;
  int y;
  int z;
  Coord() { x = y = z = 0; };
  Coord(int x, int y, int z) : x(x), y(y), z(z) {}
  void print() { cout << "(" << x << ", " << y << ", " << z << ")" << endl; }
};

class User {
 protected:
  string name;

 public:
  User() { random(); }
  void random();
  string getName() { return name; }
};

class Matrix {
 public:
  Matrix() { size = Coord(0, 0, 0), grid = nullptr; }
  Matrix(Coord size);
  void print();
  Coord getSize() { return size; };
  User*** getAddr() { return grid; };
  ~Matrix();

 private:
  Coord size;
  User*** grid;
};

class Agent {
  Matrix* matrix;

 public:
  Agent();
  Agent(Matrix& matrix);
  Coord search();
};

class Neo : public User {
 public:
  Neo() { name = "NEO"; }
};

// generating random character - do 3 times
void User::random() {
  do {
    name = " ";
    for (int i = 0; i < 3; i++) {
      char minc = 'A';
      char maxc = 'Z';
      name += minc + rand() % (maxc - minc + 1);
    }
  } while (name == "NEO");
};

// constructor that will create the 3dArray
Matrix::Matrix(Coord size) {
  this->size = size;
  grid = new User**[size.z];
  for (int z = 0; z < size.z; z++) {
    grid[z] = new User*[size.y];
    for (int y = 0; y < size.y; y++) {
      grid[z][y] = new User[size.x];
    }
  }
  // creating a random place in the matrix to put NEO
  int ranx = rand() % size.x;
  int rany = rand() % size.y;
  int ranz = rand() % size.z;
  grid[ranx][rany][ranz] = new User*;
}
// print 3D array
void Matrix::print() {
  for (int z = 0; z < size.z; z++) {
    for (int y = 0; y < size.y; y++) {
      for (int x = 0; x < size.x; x++) {
        cout << grid[z][y][x].getName() << " ";
      }
      cout << endl;
    }
    cout << endl;
  }
}
quickerson
final tangle
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the issue is where I create a random place in the matrix to put Neo. how do I properly assign grid[ranx][rany][ranz]?