Inbound Route to custom extension

I’ve configured in the extension_custom.conf a stasis app.

[from-internal-custom]
exten => _X.,1,NoOp()
same => n,Stasis(my-app)
same => n,Hangup()

I’ve also configured a sip trunk and want to route inbound calls with inbound route to this stasis app.

What do I have to configure in the set destination in the inbound route configuration to route the incoming call from the sip trunk to the stasis app?