Is it possible to turn the Wifi of the smartphone off?

i want to creat a button to turn off the phones wifi if i click on it.
Is this somehow possible with appinventor?

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you can do that using my WiFi extension https://puravidaapps.com/wifi.php

com.puravidaapps.TaifunWiFi.aix

wifi.aia

The App Inventor Extensions are currently in testing. See the announcement for more information about how to use an App Inventor Extension. 

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