Update TOC using openxml

[kumarmParticipant]

hi Eric,

i have gone through your blog and tried the below approach to update the tOCs of a document. the document has the TOCs already but seems to be not working.
could you please help me out where i was going wrong.

Code used
using (WordprocessingDocument document = WordprocessingDocument.Open(localFilePath,true))//@”C:\Users\MAKTHKU1\Downloads\TocAdder-1\TocAdder\TOC\bin\Debug\netcoreapp3.1\CEMA401A2202 Protocol v00.docx”, true))
{

var settingsPart =
document.MainDocumentPart.GetPartsOfType<DocumentSettingsPart>().First();
settingsPart.Settings = new Settings { BordersDoNotSurroundFooter = new BordersDoNotSurroundFooter() { Val = true } };
settingsPart.Settings.Append(new UpdateFieldsOnOpen() { Val = true });
settingsPart.Settings.Save();
document.Save();
}

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