applescript – error "System events had an error: Unable to process the request process " System Preferences "."

When running
tell the application "system events"
Click the "Disable Bluetooth" button in Window 1 of the "System Preferences" application process.
end say

I receive the error:
error "System events had an error: could not get the request process " System Preferences "." Issue -1728 of the application process "System Preferences"

I have also tried
tell the application "System Preferences"
reveal the "com.apple.preferences.Bluetooth" pane
end say
Tell the "System Events" application to indicate to the "System Preferences" process
click on button 6 of window 1
end say
leave the application "System Preferences"

Did not give me any mistakes, but it did not work

I am under macOS Sierra. This is supposed to disable my bluetooth (I plan to launch it when I connect)

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