De-selecting switch

Sorry if you've already answered this somewhere, but I'm wondering if it's possible to set a switch back to it's default unselected state without messing with the label/value mapping. Currently, if I try to send the value from my custom module, it doesn't seem to update the widget.

Code from my custom widget:
send(localhost, main_port, "/switch_real_value", -1)

Value field in switch: OSC{/switch_real_value}

It's getting the value, but it doesn't update. Am I missing something?

Ah nevermind, I got it using set() in the script with sync:false. Much easier.