Works One Way But Not The Other

Import mojo

Class Nano Extends App
  Field xa:Float
  
  Method OnCreate()
    SetUpdateRate 60
  End

  Method OnUpdate()
    xa += 1
  End

  Method OnRender()
    Cls(50, 100, 150)
    SetColor(255, 255, 255)
    DrawRect(xa, 0, 50, 50)
  End
End

Function Main()
  New Nano()
End

Strict

Import mojo

Function Main:Int()
	New MyApp()
	Return 0
End

Class MyApp Extends App
	Const FPS:Int = 60
	Field x:Float, y:Float
	Field delta:DeltaTimer
	
	Method OnCreate:Int()
		delta = New DeltaTimer(FPS)
		SetUpdateRate(FPS)
		x = 0
		y = 100
		Return 0
	End
	
	Method OnUpdate:Int()
		delta.UpdateDelta()
		x += 1 * delta.delta
		If x > DeviceWidth() Then x = 0
		Return 0
	End
	
	Method OnRender:Int()
		FPSCounter.Update()
		Cls
		FPSCounter.Draw(0, 0)
		DrawRect(x - 5, y - 5, 10, 10)
		Return 0
	End
End

'summary: Simple Frames per second counter
Class FPSCounter Abstract
	Global fpsCount:Int
	Global startTime:Int
	Global totalFPS:Int

	Function Update:Void()
		If Millisecs() - startTime >= 1000
			totalFPS = fpsCount
			fpsCount = 0
			startTime = Millisecs()
		Else
			fpsCount+=1
		End
	End

	Function Draw:Void(x% = 0, y% = 0, ax# = 0, ay# = 0)
		DrawText("FPS: " + totalFPS, x, y, ax, ay)
	End
End

'summary: DeltaTimer by James Boyd
Class DeltaTimer
	Field targetfps:Float = 60
	Field currentticks:Float
	Field lastticks:Float
	Field frametime:Float
	Field delta:Float
	
	Method New (fps:Float)
		targetfps = fps
		lastticks = Millisecs()
	End
	
	Method UpdateDelta:Void()
		currentticks = Millisecs()
		frametime = currentticks - lastticks
		delta = frametime / (1000.0 / targetfps)
		If delta > 5 Then
			delta = 1
		End
		lastticks = currentticks
	End
End

var CANVAS_WIDTH=640;
var CANVAS_HEIGHT=480;