ubuntu 20.04 – Linux make file executable inside service

I do have service looking like this:

[Unit]
Description=API environment service

[Service]
WorkingDirectory=/var/www/api
ExecStart=/var/www/api/api
Restart=always
# Restart service after 10 seconds if the dotnet service crashes:
RestartSec=10
KillSignal=SIGINT
SyslogIdentifier=dotnet-example
User=apache
Environment=ASPNETCORE_ENVIRONMENT=Production 

[Install]

Service works but every time I copy new files to that folder through ftp I need to run sudo chmod +x /var/www/api/api to make that file executable and then do sudo systemctl restart api.service

My question is is it possible to somehow add line at top of this service which will make this file executable if it is not so i only need to run restart command?