Linking Qt application with systemd watchdog

[eluppai]

I am developing a QT application on embedded linux platform. I start my application using a bash script.
I am calling this bash script as a part of service as shown below.

[Unit]
Description=AutoStart App

[Service]
Type=simple
ExecStartPre=/home/root/Startup_scripts/Clean_Application.sh
ExecStart=/home/root/Startup_scripts/Startup_Script.sh
WatchdogSecs=10min
NotifyAccess=all
Restart=always
StartLimitInterval=5min
StartLimitBurst=4
StartLimitAction=reboot-force

[Install]
WantedBy=multi-user.target

I want reset the watchdog timer but I am unable to do so.
I have tried using systemd-notify to reset the timer. But I am unable to do so.
has anyone tried linking their qt application to linux watchdog?