Pointfeature data

Hello!
I,ve made code which helps me select points from 3d, extract coordinates of them and write ti the file.
When i select by clicking each point code returns me PointFeature and i have problem with that type:
When i trying to get location.x or y/z of pointfeature it returns me fail: feature has no origin.
Question: how to get coordinates xyz from the object?
Or maybe possible to convert it to nxopenpoint object where i can easily can do it??
Please help

Thanks
E