AHK利用ComObjActive操作word

目前还不是太明白ComObjActive的具体用法，不过通过一些示例和自己的尝试，总算能写点自己能用的功能。如有错误，请指正。
在此感谢各位大佬和群友平时的帮助。
疑问:

    wdSectionBreakContinuous := 3
    ox.Application.Selection.InsertBreak(wdSectionBreakContinuous)
为何不能写成ox.Application.Selection.InsertBreak.wdSectionBreakContinuous := 3

可正常使用的代码分享：

;qww-word中 {{{2
#IfWinActive ahk_class OpusApp ahk_exe WINWORD.EXE
{
  F2::  ;添加连续分页符
    ox := ComObjActive("Word.Application")
    wdSectionBreakContinuous := 3
    ox.Application.Selection.InsertBreak(wdSectionBreakContinuous)
  Return
	Space & a::   ;导航窗格
    ox := ComObjActive("Word.Application")
    ox.Application.ActiveWindow.DocumentMap := True
  Return 
  Space & d::   ;设置首行不缩进
  	ox := ComObjActive("Word.Application")
    ox.Application.Selection.ParagraphFormat.CharacterUnitFirstLineIndent := 0.1		
  Return
  Space & e::		  ;表格字体居中
    ox := ComObjActive("Word.Application")
    wdAlignParagraphCenter :=1
    wdCellAlignVerticalCenter :=1
    ox.Application.Selection.Cells.VerticalAlignment := wdCellAlignVerticalCenter
    ox.Application.Selection.ParagraphFormat.Alignment:= wdAlignParagraphCenter
    ox.Application.Selection.ParagraphFormat.CharacterUnitFirstLineIndent := 0.1
  Return
	Space & f::   	          	  ;字体添加黄背景颜色
    ox := ComObjActive("Word.Application")
    wdred := 7
    ox.Application.Selection.Range.HighlightColorIndex := wdred
  Return
	Space & g::   	          	  ;字体添加绿背景颜色
    ox := ComObjActive("Word.Application")
    wdred := 4
    ox.Application.Selection.Range.HighlightColorIndex := wdred
  Return
	Space & o::	  	;合并单元格
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Cells.Merge
  Return
	Space & p::	  	;拆分单元格
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Cells.SplitNumRows:=1,NumColumns:=2,MergeBeforeSplit:=True
  Return
	Space & q::	  	;选中整个表格
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Tables(1).Select
  Return
	Space & s::	;设置行首缩进2字符—缩进拼音
  	ox := ComObjActive("Word.Application")
    ox.Application.Selection.ParagraphFormat.CharacterUnitFirstLineIndent := 2
	Return
	Space & u::             		  ;取消字体背景颜色
    ox := ComObjActive("Word.Application")
    wdNoHighlight := 0
    ox.Application.Selection.Range.HighlightColorIndex := wdNoHighlight
  Return
	Space & w::	  	;根据窗口自动调整表格
    ox := ComObjActive("Word.Application")
    wdAutoFitWindow := 2
    ox.Application.Selection.Tables(1).AutoFitBehavior(wdAutoFitWindow)
  Return
	Space & z::				            ;页面背景调整为浅绿色
    ox := ComObjActive("Word.Application")
    ox.Application.ActiveDocument.Background.Fill.Solid
	Return
  Space & 9::		    ;删除表格列
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Columns.Delete
  Return
  Space & 0::		    ;删除表格行
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Rows.Delete
  Return
  Space & -::   ;删除表格
    ox := ComObjActive("Word.Application")
    ox.Application.Selection.Tables(1).Select
    ox.Application.Selection.Tables(1).Delete
  Return
	Space & \::                   ;word整页视图
    ox := ComObjActive("Word.Application")
    wdPageFitFullPage := 1
    ox.Application.ActiveWindow.ActivePane.View.Zoom.PageFit := wdPageFitFullPage
  Return