[Qgis-user] grass - r.drain

[Federico Lazzaroni]

hello,
I'm trying tu use command r.drain in grass but i obtain following error:
"value of parameter missing:.....

[image: Immagine incorporata 2]

But I can't set any layer in relative box.


[image: Immagine incorporata 3]

Where is my mistake?
Thanks
Federico
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