Config file Json 6

#include <ArduinoJson.h>
#include <FS.h>

bool loadConfiguration() {
 File file = SPIFFS.open("/config.json", "r");
 if (!file) {
  Serial.println("Failed to open config file");
  return false;
 }

  DynamicJsonDocument jsonBuffer(2048);
  DeserializationError error = deserializeJson(jsonBuffer, file);
  if (error) {
   Serial.print(F("deserializeJson() failed: "));
   Serial.println(error.f_str());
   return false;
  }

  // Copy values from the JsonObject to the Config
 Usermax0 = jsonBuffer["Usermax0"];
 Usermin0 = jsonBuffer["Usermin0"];
 Usermax1 = jsonBuffer["Usermax1"];
 Usermin1 = jsonBuffer["Usermin1"];
 Usermax2 = jsonBuffer["Usermax2"];
 Usermin2 = jsonBuffer["Usermin2"];
 Usermax3 = jsonBuffer["Usermax3"];
 Usermin3 = jsonBuffer["Usermin3"];
 Usermax4 = jsonBuffer["Usermax4"];
 Usermin4 = jsonBuffer["Usermin4"];
 Usermax5 = jsonBuffer["Usermax5"];
 Usermin5 = jsonBuffer["Usermin5"];
 Usermax6 = jsonBuffer["Usermax6"];
 Usermin6 = jsonBuffer["Usermin6"];
 Usermax7 = jsonBuffer["Usermax7"];
 Usermin7 = jsonBuffer["Usermin7"];
 Usermax8 = jsonBuffer["Usermax8"];
 Usermin8 = jsonBuffer["Usermin8"];
 Usermax9 = jsonBuffer["Usermax9"];
 Usermin9 = jsonBuffer["Usermin9"];
 Usermax10 = jsonBuffer["Usermax10"];
 Usermin10 = jsonBuffer["Usermin10"];
 Usermax11 = jsonBuffer["Usermax11"];
 Usermin11 = jsonBuffer["Usermin11"];
 Usermax12 = jsonBuffer["Usermax12"];
 Usermin12 = jsonBuffer["Usermin12"];
 Usermax13 = jsonBuffer["Usermax13"];
 Usermin13 = jsonBuffer["Usermin13"];
 Usermax14 = jsonBuffer["Usermax14"];
 Usermin14 = jsonBuffer["Usermin14"];
 Usermax15 = jsonBuffer["Usermax15"];
 Usermin15 = jsonBuffer["Usermin15"];

  // Close the file (File's destructor doesn't close the file)
  file.close();
}

bool saveConfiguration() {
 File file = SPIFFS.open("/config.json", "w");
 if (!file) {
  Serial.println("Failed to open config file for writing");
  return false;
 }

 // DynamicJsonDocument<1536> jsonBuffer;
 DynamicJsonDocument jsonBuffer(1536);

 // Set the values
 jsonBuffer["Usermax0"] = Usermax0;
 jsonBuffer["Usermin0"] = Usermin0;
 jsonBuffer["Usermax1"] = Usermax1;
 jsonBuffer["Usermin1"] = Usermin1;
 jsonBuffer["Usermax2"] = Usermax2;
 jsonBuffer["Usermin2"] = Usermin2;
 jsonBuffer["Usermax3"] = Usermax3;
 jsonBuffer["Usermin3"] = Usermin3;
 jsonBuffer["Usermax4"] = Usermax4;
 jsonBuffer["Usermin4"] = Usermin4;
 jsonBuffer["Usermax5"] = Usermax5;
 jsonBuffer["Usermin5"] = Usermin5;
 jsonBuffer["Usermax6"] = Usermax6;
 jsonBuffer["Usermin6"] = Usermin6;
 jsonBuffer["Usermax7"] = Usermax7;
 jsonBuffer["Usermin7"] = Usermin7;
 jsonBuffer["Usermax8"] = Usermax8;
 jsonBuffer["Usermin8"] = Usermin8;
 jsonBuffer["Usermax9"] = Usermax9;
 jsonBuffer["Usermin9"] = Usermin9;
 jsonBuffer["Usermax10"] = Usermax10;
 jsonBuffer["Usermin10"] = Usermin10;
 jsonBuffer["Usermax11"] = Usermax11;
 jsonBuffer["Usermin11"] = Usermin11;
 jsonBuffer["Usermax12"] = Usermax12;
 jsonBuffer["Usermin12"] = Usermin12;
 jsonBuffer["Usermax13"] = Usermax13;
 jsonBuffer["Usermin13"] = Usermin13;
 jsonBuffer["Usermax14"] = Usermax14;
 jsonBuffer["Usermin14"] = Usermin14;
 jsonBuffer["Usermax15"] = Usermax15;
 jsonBuffer["Usermin15"] = Usermin15;

 // Serialize JSON to file
 serializeJson(jsonBuffer, file);
 file.close();
}

void setup()
{
 Serial.begin(115200);
 MyValue1 = random(1,99);
 MyValue2 = random(1,99);
 MyValue3 = random(1,99);
 MyValue4 = random(1,99);

 Serial.println("\n\nMounting FS...\n");
 if (!SPIFFS.begin())
 {
  Serial.println("erreur SPIFFS");
  while (true); // on ne va pas plus loin
 }

 if(!saveConfiguration)
  { Serial.println(F("failed to Save...")); }
 else
 { Serial.println(F("Saved OK...")); }

 if(!loadConfiguration)
  { Serial.println(F("Failed to load...")); }
 else
 { Serial.println(F("Load OK...")); }
}

void loop() {
  // put your main code here, to run repeatedly:

}