AutoHotkey Community

I'm trying to piece together a script that toggles Shift on and off (up and down) when the button at the end of a Surface Pen is pressed.

My current script is as follows:

#F20::
Sleep, 100
Send, {Shift down}
KeyWait, #F20
Send, {Shift up}
return

It throws an invalid parameter error at the fourth line. Removing the space did nothing.
If it's relevant, the first line threw the same error with a space in, or seemed to.

Please contribute any insight into a solution or the nature of these Pen keys that you may have. It will be greatly appreciated. Thanks!

You can use a toggle variable.

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Greetings,
Alibaba