flying return with Singapore Airline using VA Miles ???

Hello
If I have 360,000 VA airmiles, can I book a return to Sydney in upper class for two people flying with Singapore Airlines (business class) instead of VA ? Or can you only do one leg with Singapore ?
Would be interested if anyone has done this before
Thanks
If I have 360,000 VA airmiles, can I book a return to Sydney in upper class for two people flying with Singapore Airlines (business class) instead of VA ? Or can you only do one leg with Singapore ?
Would be interested if anyone has done this before
Thanks