Brackets to bold words

Hi I’m wondering if anyone can help me to have macro that add bracket to all bold words, I’m using one for Microsoft word but its not working for LO

Sub Macro1()
  With Selection.Find
    .ClearFormatting
    .Font.Bold = True
    .Replacement.ClearFormatting
    .Text = ""
    .Replacement.Text = "[[      ]]"
    .Forward = True
    .Wrap = wdFindContinue
    .Format = True
    .MatchCase = False
    .MatchWholeWord = False
    .MatchWildcards = False
    .MatchSoundsLike = False
    .MatchAllWordForms = False
    .Execute Replace:=wdReplaceAll
  End With
End Sub

Need advice what to do to make it work for the LO

Search text = ([a-zA-Z]+); Format: Type = Bold
Replacement text = [&]; Format: Type = Bold
Enable regular expressions.

A recorded macro with those settings gives

sub Boldinbrackets
rem ----------------------------------------------------------------------
rem define variables
dim document   as object
dim dispatcher as object
rem ----------------------------------------------------------------------
rem get access to the document
document   = ThisComponent.CurrentController.Frame
dispatcher = createUnoService("com.sun.star.frame.DispatchHelper")

rem ----------------------------------------------------------------------
dim args1(21) as new com.sun.star.beans.PropertyValue
args1(0).Name = "SearchItem.StyleFamily"
args1(0).Value = 2
args1(1).Name = "SearchItem.CellType"
args1(1).Value = 0
args1(2).Name = "SearchItem.RowDirection"
args1(2).Value = true
args1(3).Name = "SearchItem.AllTables"
args1(3).Value = false
args1(4).Name = "SearchItem.SearchFiltered"
args1(4).Value = false
args1(5).Name = "SearchItem.Backward"
args1(5).Value = false
args1(6).Name = "SearchItem.Pattern"
args1(6).Value = false
args1(7).Name = "SearchItem.Content"
args1(7).Value = false
args1(8).Name = "SearchItem.AsianOptions"
args1(8).Value = false
args1(9).Name = "SearchItem.AlgorithmType"
args1(9).Value = 1
args1(10).Name = "SearchItem.SearchFlags"
args1(10).Value = 65536
args1(11).Name = "SearchItem.SearchString"
args1(11).Value = "([a-zA-Z]+)"
args1(12).Name = "SearchItem.ReplaceString"
args1(12).Value = "[&]"
args1(13).Name = "SearchItem.Locale"
args1(13).Value = 255
args1(14).Name = "SearchItem.ChangedChars"
args1(14).Value = 2
args1(15).Name = "SearchItem.DeletedChars"
args1(15).Value = 2
args1(16).Name = "SearchItem.InsertedChars"
args1(16).Value = 2
args1(17).Name = "SearchItem.TransliterateFlags"
args1(17).Value = 1280
args1(18).Name = "SearchItem.Command"
args1(18).Value = 3
args1(19).Name = "SearchItem.SearchFormatted"
args1(19).Value = false
args1(20).Name = "SearchItem.AlgorithmType2"
args1(20).Value = 2
args1(21).Name = "Quiet"
args1(21).Value = true

dispatcher.executeDispatch(document, ".uno:ExecuteSearch", "", 0, args1())

Thanks for your time, I really appreciate you