Hi ayo,
you can find async call in TestTTN - in the source it starts at line 2548.
Or simply search for "Geocode PC Async" (without quotiation marks).
The idea is very easy.
You call the async function. Than you iterate over "ReturnAvailable" calls.
And if you got a return you call the AsyncRetrieve function of the asyn call you made.
Regards
Manfred