How do I make a animation for running but not walking?

Okay so im trying to make a animation for running but what ever I do it connects to walking can someone help? and also im having problem when it loops it looks weird is their a way to fix that?

Heres the code.

Script:

function onPlayerEntered(player) repeat wait () until player.Character ~= nil local s = script.SprintScript:clone() s.Parent = player.Character s.Disabled = false player.CharacterAdded:connect(function (char) local s = script.SprintScript:clone() s.Parent = char s.Disabled = false
end) end

game.Players.PlayerAdded:connect(onPlayerEntered)

Local Script inside of it:

local mouse = game.Players.LocalPlayer:GetMouse() local running = false

function getTool()
for _, kid in ipairs(script.Parent:GetChildren()) do if kid.className == "Tool" then return kid end end return nil end

mouse.KeyDown:connect(function (key) key = string.lower(key) if string.byte(key) == 48 then running = true local keyConnection = mouse.KeyUp:connect(function (key) if string.byte(key) == 48 then running = false end end) for i = 1,5 do game.Workspace.CurrentCamera.FieldOfView = (70+(i2)) wait() end game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 32 repeat wait () until running == false keyConnection:disconnect() game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 16 for i = 1,5 do game.Workspace.CurrentCamera.FieldOfView = (80-(i2)) wait() end end end)