[PROJECT] Color row after field changed - doesn't work for subprojects

I'm trying to set up VBA code to color the whole row when the field Text12 is equal to "OK" or "NOK" (and other keywords). The code below works at a Master Project level, that is, because it uses the Project_Change event. However, the event doesn't trigger if I edit a task that is in a SubProject. I'm using the App_ProjectBeforeTaskChange event to detect when a task is changed > check if its the Text12 field > set a bool to true so it checks on the Project_Change event and color the row.

If I try to run the code directly from App_ProjectBeforeTaskChange, VBA throws the 1100 error "this method is not available in this situation". This happens at the SelectRow line and at the Font32Ex CellColor line.

I've tried using timers and DoEvents loops, but no avail. I don't know what else to try. It seems there's no threading either, so I can't color the rows after some miliseconds.

You can create an empty project and copy the code below and it should work for you, if you want to help me :) I'm not a VBA expert btw, started learning two months ago.

ThisProject:

Code:

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Private Sub Project_Open(ByVal pj As Project)
    InitializeEventHandler 'this runs at start up. You could also use a button to call this everytime you change the code, so you don't need to restart Project
End Sub

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Module1: Regular Module

Code:

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Option Explicit
Dim EventHandler As EventClassModule

Sub InitializeEventHandler()
    ' Initializing the object to handle the events
    Set EventHandler = New EventClassModule
    Set EventHandler.App = Application
    Set EventHandler.proj = Application.ActiveProject
End Sub

Sub ApplyColor()
    ' this is the sub that changed the color, from the Project_Change event
    Dim t As Task
   
    Set t = EventHandler.ChangedTask
   
    If Not t Is Nothing Then
        Find "Unique ID", "equals", t.UniqueID
        SelectRow
        Select Case EventHandler.NewValue
            Case "OK"
                Font32Ex CellColor:=14282722 'green
            Case "NOK"
                Font32Ex CellColor:=11324407 'red
            Case "PROGRESS"
                Font32Ex CellColor:=65535 'blue
            Case "REPEAT"
                Font32Ex CellColor:=15652797 'yellow
            Case Else
                Font32Ex CellColor:=-16777216 'no color
        End Select
    End If
End Sub

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EventClassModule: ClassModule

Code:

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Public WithEvents App As Application
Public WithEvents proj As Project

Public NewValue As String 'used to check what the user typed in the Text12 field
Public ChangePending As Boolean 'switch bool to trigger the ApplyColor
Public ChangedTask As Task 'reference to the changed task, to select its row later in ApplyColor

Private Sub App_ProjectBeforeTaskChange(ByVal tsk As Task, ByVal Field As PjField, ByVal NewVal As Variant, Cancel As Boolean)
    ' this runs when changing a task
    If Field = 188743998 Then 'Custom field Text12
        Set ChangedTask = tsk
        NewValue = NewVal
        ChangePending = True
    End If
End Sub

Private Sub Proj_Change(ByVal pj As Project)
    ' this runs right after changing a task
    If ChangePending Then
        ApplyColor
        ChangePending = False
    End If
End Sub

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