Zend certified PHP/Magento developer

Adding Ctrl key to autohotkey combination

I have this simple hot key to mute the volume

ScrollLock::Send {Volume_Mute}

It works but I want to add the Ctrl key so that I have to press Ctrl + ScrollLock to activate {Volume_Mute}. How do you do it?

I tried ^ScrollLock::Send {Volume_Mute} but it doesn’t work.