Word 365 Conditional Text to depend on Document Title. How? (w/o VBA)

How to have conditional text based on Document Property Title ? Different text for empty Title or NOT-empty Title

On Main body of Document, ⒈ inserted QuickPart-DocmentProperty. ⒉ Define Bookmark DocPropTitle. ⒊Code as follows

[CODE]{IF { REF DocPropTitle } <>"" "DocPropertyTitle will be used for FileName instead of 1st Paragraph; if NOT Ok, clear Title To Get Correct File Name in Save-As-Dialog-Box” “Save As Dialog Box will show 1st Paragraph. Please Add Period after First Character of Dialog-Box" } /CODE]

If Statement is not recognizing Title content. It will flip to either output, if I change operator EQUAL to NOT-EQUAL.

After reboot, and cleaning what I think could be wrong, I am still facing Hurdles:

1) IF statement Criteria disappear when Criteria change to Blank.
Example using Bookmark DocProptTitle as Criteria, how to deal with Title changed to blank?
Line 5 DocPropTitle is [Title]
Bookmark assigned to Title disappear
(Line 5) becomes DocPropTitle
BookMark Name still exist but Go-To-BookMark shows nothing
IF Statement returns Source Error
How to get Bookmark refers to blank?
Excel has IFERROR; can Word handle IFERROR (when Bookmark disappear)?
NOT critical, but can BookMark a phrase vs sentence? If Not, how to handle LF wrapping ?

Example using { DOCPROPERTY TITLE } as Criteria, how to deal with Title changed to blank?
IF Statement NO LONGER shows { DOCPROPERTY TITLE}
How to get Criteria in IF Statement { DOCPROPERTY TITLE} stay when Title change to blank?

Ideally, for my case, IF Statement should not deconstruct itself when Criteria becomes blank by User.
I am still trying to understand how this is useful and different from other programming practice which should protect code independent of user input....

Thanks for follow up!