How do i know what key was clicked by the user? (CAS)

Im trying to figure out which key the user clicked but i cant seem to figure out how.

local function HandleAction(actionName, inputstate, InputObject)
    print(InputObject) -- Only Outputs: "InputObject"
end

Im using Context ActionService btw.

What are you trying to achieve? Why not use UserInputService, as it is much more easier to check what key the player pressed?

Example:

local UIS = game:GetService("UserInputService")

UIS.InputBegan:Connect(function(key)
	print(key) -- Prints the key that was pressed
end)