ContextActionService doublecasting

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#1

I am trying to use use ContextActionService to bind a function to a key, here is an example i am using in a localscript in StarterPlayerScripts:

local function activateAction()
	print("activateAction at:", tick())
end
contextAction:BindAction("Test", activateAction, false, Enum.KeyCode.T)

when i press the "T" key i get this in console:
    activateAction at: 1561034826.9162
    activateAction at: 1561034826.9977
instead of only one i get it twice

Can someone explain to me why is this happening?
#2

For context action service theres two parts to it. Enum.UserInputState.Begin and Enum.UserInputState.End, for activate function, there can be tuple arguements: Name, InputState, KeyCode. So when you press and let go, it fires twice because you didn’t put a conditional for whether you want it to fire only when you begin input or end it.