Sigfox Update Location

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lejibxl

I don't understand how to update a location from a JSON?
The JSON from SigFOX includes this: "dataJson": {"lat": "50.3", "lng": "4.3", ..
But in the tab "Devices > Location" I find this: "latitude": "0.00","longitude": "0.00" !
Someone could help me.
thank you in advance