Voice recognition based storage locker

Hi, I'm quite new to the voice recognition project. For this project, I'm going to set the 6 digit of password. So, once the password was matched, the storage locker will open and close accordingly. The problem is that this voice recognition module v3 only can recognize 7 digit at one time. So, I have digit 0 to digit 9, totally 10 digit. So, I have trained the voice module to recognize digit 0 to digit 9. Similarly, I have utilize the multicommand example given in arduino. The working principle is that after I speak from digit 0 to digit 6, I need to set a digit in order to switch to the second group and enable the digit 7,8 and 9 to be spoken. My question is that how I going to set the module in roder for me to speak from digit 0 to digit 9 unsequncely. Below is the code:

In this case, I'm using digit 0 as the word to switch between group1 and group 2.

#include <SoftwareSerial.h>
#include "VoiceRecognitionV3.h"

/**        
  Connection
  Arduino    VoiceRecognitionModule
   2   ------->     TX
   3   ------->     RX
*/
VR myVR(2,3);    // 2:RX 3:TX, you can choose your favourite pins.

uint8_t record[7]; // save record
uint8_t buf[64];

int led = 13;

int group = 0;

#define group0Record0       (0)
#define group0Record1       (1) 
#define group0Record2       (2) 
#define group0Record3       (3) 
#define group0Record4       (4) 
#define group0Record5       (5) 
#define group0Record6       (6) 

#define group1Record1       (7) 
#define group1Record2       (8) 
#define group1Record3       (9) 


void setup()
{
  /** initialize */
  myVR.begin(9600);
  
  Serial.begin(115200);
  Serial.println("Elechouse Voice Recognition V3 Module\r\nMulti Commands sample");
  
  pinMode(led, OUTPUT);
    
  if(myVR.clear() == 0){
    Serial.println("Recognizer cleared.");
  }else{
    Serial.println("Not find VoiceRecognitionModule.");
    Serial.println("Please check connection and restart Arduino.");
    while(1);
  }
  
  record[0] = group0Record0;
  record[1] = group0Record1;
  record[2] = group0Record2;
  record[3] = group0Record3;
  record[4] = group0Record4;
  record[5] = group0Record5;
  record[6] = group0Record6;
  group = 0;
  
  if(myVR.load(record, 7) >= 0){
    printRecord(record, 7);
    Serial.println(F("loaded."));
  }
  
}

void loop()
{
  int ret;
  ret = myVR.recognize(buf, 50);
  if(ret>0){
    switch(buf[1])
    {
      case group0Record0:
     
        if(group == 0)
        {
          group = 1;
          myVR.clear();
          record[0] = group0Record0;
          record[1] = group1Record1;
          record[2] = group1Record2;
          record[3] = group1Record3;
          record[4] = group0Record4;
          record[5] = group0Record5;
          record[6] = group0Record6;
          if(myVR.load(record, 7) >= 0){
            printRecord(record, 7);
            Serial.println(F("loaded."));
          }
        }
        else
        {
          group = 0;
  
          myVR.clear();
          
          record[0] = group0Record0;
          record[1] = group0Record1;
          record[2] = group0Record2;
          record[3] = group0Record3;
        
          
          if(myVR.load(record, 4) >= 0){
            printRecord(record, 4);
            Serial.println(F("loaded."));
          }
       }
       break;
      default:
      break;
       
   
      
    }
    /** voice recognized */
    printVR(buf);
  }
}

/**
  @brief   Print signature, if the character is invisible, 
           print hexible value instead.
  @param   buf     --> command length
           len     --> number of parameters
*/
void printSignature(uint8_t *buf, int len)
{
  int i;
  for(i=0; i<len; i++){
    if(buf[i]>0x19 && buf[i]<0x7F){
      Serial.write(buf[i]);
    }
    else{
      Serial.print("[");
      Serial.print(buf[i], HEX);
      Serial.print("]");
    }
  }
}

/**
  @brief   Print signature, if the character is invisible, 
           print hexible value instead.
  @param   buf  -->  VR module return value when voice is recognized.
             buf[0]  -->  Group mode(FF: None Group, 0x8n: User, 0x0n:System
             buf[1]  -->  number of record which is recognized. 
             buf[2]  -->  Recognizer index(position) value of the recognized record.
             buf[3]  -->  Signature length
             buf[4]~buf[n] --> Signature
*/
void printVR(uint8_t *buf)
{
  Serial.println("VR Index\tGroup\tRecordNum\tSignature");

  Serial.print(buf[2], DEC);
  Serial.print("\t\t");

  if(buf[0] == 0xFF){
    Serial.print("NONE");
  }
  else if(buf[0]&0x80){
    Serial.print("UG ");
    Serial.print(buf[0]&(~0x80), DEC);
  }
  else{
    Serial.print("SG ");
    Serial.print(buf[0], DEC);
  }
  Serial.print("\t");

  Serial.print(buf[1], DEC);
  Serial.print("\t\t");
  if(buf[3]>0){
    printSignature(buf+4, buf[3]);
  }
  else{
    Serial.print("NONE");
  }
//  Serial.println("\r\n");
  Serial.println();
}

void printRecord(uint8_t *buf, uint8_t len)
{
  Serial.print(F("Record: "));
  for(int i=0; i<len; i++){
    Serial.print(buf[i], DEC);
    Serial.print(", ");
  }
}

I would get hold if the data sheets and search there. Application nores often exists.

What do u means ?

Find the data sheets for the voice recognising circuit and look for information there.