How to enable upnp for GL-SFT1200?

Hello, how to enable upnp for GL-SFT1200 in openwrt?
I can’t find it in the openwrt functions

Why do you need UPnP? It‘s a high security risk.
Installing the luci plugin luci-app-upnp should help anyway.

solved. no security problem. thank you. i have router cascade network and i need internal upnp ports