iOS Question Why UIFont Initialization Error in B4I here?

[ZainAlAazizi]

Hi. I have made a test app and defined a font in it.
I drew a circle with a "Hello World!" text.
It works fine in B4J and B4A.
In B4i, the error message below was shown:

Application_Start
*** mainpage: B4XPage_Created
Error occurred on line: 41 (B4XMainPage)
Object was not initialized (UIFont)

I tried many things to fix it but I failed.
I am a beginner. Could you help me?
Attached is the essential parts of the project.
I have deleted some files because the post refused to upload the whole project

 

[ZainAlAazizi]

Sub Class_Globals
    Private Root As B4XView
    #If B4J
        Private fx As JFX
    #End If
    Private xui As XUI
    Private pnlDraw As B4XView
    Private layer As B4XCanvas
    Private fontObject As B4XFont
End Sub

Public Sub Initialize
    B4XPages.GetManager.LogEvents = True
End Sub

'This event will be called once, before the page becomes visible.
Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("MainPage")
    fontObject=CreateB4XFont("calibri.ttf",50,12)
    layer.Initialize(pnlDraw)
    layer.DrawCircle(pnlDraw.Width/2,pnlDraw.Height/2,pnlDraw.Width/2,xui.Color_DarkGray,False,5)
    layer.DrawText("Hello World!",pnlDraw.Width/2,pnlDraw.Height/2,fontObject,xui.Color_Red,"CENTER")
End Sub

'You can see the list of page related events in the B4XPagesManager object. The event name is B4XPage.

Private Sub CreateB4XFont(FontFileName As String, fontSize As Float, NativeFontSize As Float) As B4XFont
    #If B4A
        Dim TT As Typeface = Typeface.LoadFromAssets(FontFileName)
        Dim fontObj As B4XFont = xui.CreateFont(TT, fontSize)
    #Else If B4i
        Dim TT As Font = Font.CreateNew2(FontFileName, NativeFontSize)
        Dim fontObj As B4XFont = xui.CreateFont(TT, fontSize)
    #Else ' B4J
    Dim fontObj As B4XFont = xui.CreateFont(fx.LoadFont(File.DirAssets, FontFileName, NativeFontSize), fontSize)
    #End If
    Return fontObj
End Sub

 

[Erel]

The font name is wrong, see this tutorial: https://www.b4x.com/android/forum/threads/custom-fonts.46461/#content