How to have user entry defining table column headings

I am trying to just create a very simple cell reference formula. I need some of my table headers to be up to user input.

In the first user-defined heading, I entered in ='Setup Page'!H19 in the header column, so that it would return the information the user typed into cell H19, but instead it just returns a 0. In the second one, I pointed it to cell I19, but it just returned 02 and erased the formula.

How do I get my table headings to reflect what the user enters in on the setup page?

This is the setup page where user puts in the names of the interaction headings and create the dropdown menus. (dropdown menus work)
setup info.jpg

Here is the table, and as you can see the headings are 0, 02, 03 rather than what the user entered in. The 0 should say "Follow-up email"; the 02 should say "Review given" etc.
table.jpg

1. Set Header Row to Off

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HeaderRowSetToOff.jpg
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2. Create your formula in row above the data

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FormulaNowWorks.jpg
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3. If referring to table data use this notation

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FormulaInTableCells.jpg

Yes you can rename the columns either manually or by VBA
- what Excel does not allow is formulas in table headers

Test in attached workbook
- (for illustration) original headers are in row 16, new headers are in row 19 (of Setup Page)
- formula in table column I is =[@[Orig C]]&[@[Orig D]]&[@[Orig E]]
- run vba with {CTRL}k
- formula automatically amended to =[@[Follow-up email]]&[@[Review given]]&[@[Added to portfolio]]
- put old headers back with {CTRL}{SHIFT}k

run with {CTRL} k

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run with {CTRL}{SHIFT} k

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If the values are in adjacent table columns then you can use method in 1st macro, otherwise use method in 2nd macro