Hi Daphnis26 -
What do you have in your level which interacts with Wind? Usually a Material will require a Wind setup to be added to the setup and a wind setup which specifically allows input from the Wind Actor as opposed to a simulated wind effect with just numbers.
Also remember that to use wind as an effector of physics based objects you will need to increase the strength in such a way as to have the wind strength and speed overcome the mass physics of the object.
Thank You
Eric Ketchum