How do I send arguments to a function through a connection? [Solved]

hey, i want to send "W" to a function through the use of heartbeat() and it says this:

17:23:19.661 - Attempt to connect failed: Passed value is not a function

and this:

17:23:20.411 - attempt to call a nil value (x46)

this is my code:

local function rotatePart(direction)
    if direction then
        print("W")
    end
end

if shifting == true then
    heartBeat1 = runService.Heartbeat:Connect(rotatePart("W"))
end

i have a bunch of conditions surrounding this code but the problem only appears when trying to pass the argument "W" to the above function.