Eingabe (Zahl 1-30) an ESP32 senden u. verarbeiten

<p>Enter Geyser Switch On Time: <input type="number" name="v" min="1" max="30" value="" Switch_On_Time 
maxlength="2" size="2" required> <em>(1-30 min)</em><br>
</p>
<p<br><button type="submit" class="button_on">START</button></p>
</form> 

String arg(String name);// get request argument value by name
String arg(int i);// get request argument value by number
String argName(int i);// get request argument name by number

server.on("/v", []() {
     int n = server.args();
     Serial.print("args_tled ");
     Serial.println(n);
    if (server.hasArg("time")) {
      // Switch On Time erzeugen
      String swot = server.argName(n);
      for (uint8_t i = 0; i < server.args(); i++) {
         swot += server.arg(i) + "\n";
  }
      switch_on_time = swot.toInt();    // Ergebnis
      Serial.print("Eingabe Zeit = ");
      Serial.println(switch_on_time);      
      
    }