How can I make sure User Keyboard Input halts when a text box is in focus?

I tried using the line if script.Parent.Chat.Frame.ChatBarParentFrame.Frame.BoxFrame.Frame.ChatBar.FocusLost then but that didn't even work. What I'm trying to do is make it so that when keys are pressed and the chat or another gui is in focus, it won't run the function.

Here is the full script, for anyone who is interested.

local plr = game.Players.LocalPlayer
local char = plr.Character or plr.CharacterAdded:Wait()
local hmnid = char:WaitForChild("Humanoid")

function onKeyPress(inputObject, gameProcessedEvent)
    if script.Parent.Chat.Frame.ChatBarParentFrame.Frame.BoxFrame.Frame.ChatBar.FocusLost then
        if inputObject.KeyCode == Enum.KeyCode.K then
            if hmnid.CameraOffset.x ~= 5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X + 0.5, hmnid.CameraOffset.Y, hmnid.CameraOffset.Z)
                print("CameraOffset X value increased.")
            else
                print("CameraOffset not changed.")
            end
        end
        if inputObject.KeyCode == Enum.KeyCode.H then
            if hmnid.CameraOffset.x ~= -5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X - 0.5, hmnid.CameraOffset.Y, hmnid.CameraOffset.Z)
                print("CameraOffset X value decreased.")
            else
                print("CameraOffset not changed.")
            end
        end
        if inputObject.KeyCode == Enum.KeyCode.J then
            if hmnid.CameraOffset.z ~= 5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X, hmnid.CameraOffset.Y, hmnid.CameraOffset.Z + 0.5)
                print("CameraOffset Z value increased.")
            else
                print("CameraOffset not changed.")
            end
        end
        if inputObject.KeyCode == Enum.KeyCode.U then
            if hmnid.CameraOffset.z ~= -5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X, hmnid.CameraOffset.Y, hmnid.CameraOffset.Z - 0.5)
                print("CameraOffset Z value decreased.")
            else
                print("CameraOffset not changed.")
            end
        end
        if inputObject.KeyCode == Enum.KeyCode.Y then
            if hmnid.CameraOffset.y ~= 5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X, hmnid.CameraOffset.Y + 0.5, hmnid.CameraOffset.Z)
                print("CameraOffset Y value increased.")
            else
                print("CameraOffset not changed.")
            end
        end
        if inputObject.KeyCode == Enum.KeyCode.N then
            if hmnid.CameraOffset.y ~= -5 then
                hmnid.CameraOffset = Vector3.new(hmnid.CameraOffset.X, hmnid.CameraOffset.Y - 0.5, hmnid.CameraOffset.Z)
                print("CameraOffset Y value decreased.")
            else
                print("CameraOffset not changed.")
            end
        end
    end
end

game:GetService("UserInputService").InputBegan:connect(onKeyPress)