B4J Question [ABMaterial] ABMbutton icon align incorrectly

Sub BuildContainer(id As String) As ABMContainer
    Dim ItemCont As ABMContainer
    ItemCont.Initialize(page, id,"")
    ItemCont.AddRowsM(2,False,3,3,"").AddCellsOSMP(1,0,0,0,8,8,8,0,0,16,0,"").AddCellsOSMP(1,0,0,0,4,4,4,0,0,0,0,"cellaligncenter")
    ItemCont.BuildGrid
    '
    Dim inp1 As ABMInput
    inp1.Initialize(page, id&"inp1", ABM.INPUT_TEXT, "配方庫名稱", False, "")
    ItemCont.Cell(1,1).AddComponent(inp1)
    Dim inp2 As ABMInput
    inp2.Initialize(page, id&"inp2", ABM.INPUT_TEXT, "配方庫說明", False, "")
    ItemCont.Cell(2,1).AddComponent(inp2)
    '
    Dim btn1 As ABMButton
    btn1.InitializeRaised(page, "rptdelete", "mdi-action-delete", ABM.ICONALIGN_LEFT, "刪除", "btndelete")
    ItemCont.cell(1,2).AddComponent(btn1)
    '
    Dim btn2 As ABMButton
    btn2.InitializeRaised(page, "rptedit", "mdi-content-save", ABM.ICONALIGN_LEFT, "修改", "")
    ItemCont.cell(2,2).AddComponent(btn2)
       
    Return ItemCont
End Sub