How to read a struct containing array of structs from TwinCat to C#

typedef struct Transcript_s
{
    char* name;
    struct Course** courseArray;
} Transcript;

typedef struct Transcript_s
{
    char* name;
    Course** courseArray; /* 'Course' is a typedef for 'struct Course_s'. */
} Transcript;

t -> courseArray = malloc(sizeof(struct Course) * (a+1));

t -> courseArray = malloc(sizeof(Course*) * (a+1));

free(t -> courseArray);

while (t->courseArray[a] != NULL)
{
    free(t->courseArray[a]->name); /* If name was dynamically allocated. */
    free(t->courseArray[a]);
}
free(t -> courseArray);

typedef struct S {
  char id;
  struct S *children[SIZE];
}S;

typedef struct S S;
struct S {
  char id;
  S *children[SIZE];
};

arr[0].children[0] = malloc(sizeof(S));

// I have it in a global variable list named: STG_Variables
stat_array_Var : array [0..5] of Station;

TcAdsClient AdsComClient = new TcAdsClient();
AdsComClient.Connect(NetID_TwinCat, 851);

int handle_array = AdsComClient.CreateVariableHandle("STG_Variables.stat_array_Var");

// get some test stations:
Station station = new Station();
Station station2 = new Station();
Station station3 = new Station();
Station station4 = new Station();
Station station5 = new Station();

Station[] station_plural = new Station[] { station, station2, station3, station4, station5 };

// write some stuff to recognize that write test worked
for (int i = 0; i < station_plural.Length; i++)
{
    station_plural[i].ClusterID = "ID: " + i.ToString();
}

// just use the normal WriteAny method without the new int[] { 5 } parameter!
// send it down to the plc
AdsComClient.WriteAny(handle_array, plural);

[StructLayout(LayoutKind.Sequential, Pack = 0)]
public class Station
{
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 11)]
    public string ClusterID;
    public byte Tech_Type;
    [MarshalAs(UnmanagedType.I1)]
    public bool Status;
    [MarshalAs(UnmanagedType.I1)]
    public bool Reject;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 51)]
    public string Rej_Detail;
    public byte Rej_Catagory;
}

TYPE Station :
STRUCT
    ClusterID   : STRING[10];
    Tech_Type   : USINT;
    Status      : BOOL;
    Reject      : BOOL;
    Rej_Detail  : STRING[50];
    Rej_Catagory : USINT; 
END_STRUCT
END_TYPE