[RESOLVE] DAdd TreeView Node On The Fly

[g-mie]

Hello Gurus...

I want to add TreeView Node on the fly. But error Invalid Object was occur.
How to solve this error?
Or any other idea?

Here my code;

Private Sub Command1_Click()
    
    TreeView1.Nodes.Add txtParentKey, tvwChild, txtChildKey, txtChildText
    'TreeView1.Nodes.Add , , txtChildKey, txtChildText   '<--no error for this

End Sub

Private Sub Form_Load()
    TreeView1.Nodes.Add , , "a", "aaa"
    TreeView1.Nodes.Add "a", tvwChild, "b", "bbb"
    TreeView1.Nodes.Add "b", tvwChild, "c", "ccc"
    TreeView1.Nodes.Add "c", tvwChild, "d", "ddd"
End Sub

Please refer to my attachment for better info.

Thanks