How do I set an argument when trying to connect a function?

To set an argument when calling a function, add '()' onto the end, with the value that you want inside. E.G:

function toggle(v)
    print(v)
end
door = game.Workspace.Door
door.Handle.ClickDetector.MouseClick:connect(toggle("Value"))

It will print: Value

BUT that didn't work, so:

function doStuff(v)
    print(v)
end
function toggle()
    doStuff("Value")
end
door = game.Workspace.Door
door.Handle.ClickDetector.MouseClick:connect(toggle)

(You don't need to do this unless the value is something that didn't trigger the event that fired the function)

Hi there. What you're trying to do isn't what you NEED to do. Basically, you're connecting a function to a click event from a ClickDetector. This will pass along the player who clicked the ClickDetector, not the part they clicked. Printing v would return a table or error, not too keen. Basically, what you want to do is this:

door = game.Workspace.Door -- When you get a chance, put the script in the door, and change this to script.Parent!

function toggle(v)
    -- Insert code here! For example: door.Transparency = 1
    print("A player named "..v.Name.." has clicked the ClickDetector!")
end

door.Handle.ClickDetector.MouseClick:connect(toggle)