Ich versuche gerade ein Excel Makro zu entbuggen, es soll eine Excel Liste anhand der Einrückungen Gruppieren

Die momentane Struktur ist beispielhaft so:

Row 1....Row2..Row3

Einheit-----A -40

Einheit------B -20

Einheit------C -20

Einheit------D 0

Komisch ist, dass das Makro bis Zeile 409 funktioniert. In Zeile 410 kommt dann der Run-time-Error. Einrückungslevel in Zeile 410 ist 9.

Sub AutoGroupBOM()
    'Define Variables
    Dim StartCell As Range 'This defines the highest level of assembly, usually 1, and must be the top leftmost cell of concern for outlining, its our starting point for grouping'
    Dim StartRow As Integer 'This defines the starting row to beging grouping, based on the row we define from StartCell'
    Dim LevelCol As Integer 'This is the column that defines the assembly level we're basing our grouping on'
    Dim LastRow As Integer 'This is the last row in the sheet that contains information we're grouping'
    Dim CurrentLevel As Integer 'iterative counter'
    Dim i As Integer
    Dim j As Integer

    Application.ScreenUpdating = False 'Turns off screen updating while running.

    'Prompts user to select the starting row. It MUST be the highest level of assembly and also the top left cell of the range you want to group/outline"
    Set StartCell = Application.InputBox("Select top left cell for highest assembly level", Type:=8)
    StartRow = StartCell.Row
    LevelCol = StartCell.Column
    LastRow = ActiveSheet.UsedRange.Rows.Count

    'Remove any pre-existing outlining on worksheet, or you're gonna have 99 problems and an outline ain't 1
    Cells.ClearOutline

    'Walk down the bom lines and group items until you reach the end of populated cells in the assembly level column
    For i = StartRow To LastRow

        Rows(i).Select
        Level = Cells(i, LevelCol).IndentLevel
        For j = 1 To Level - 1
            Selection.Rows.Group
        Next j
    Next i

    Application.ScreenUpdating = True 'Turns on screen updating when done.

End Sub