Hiding / unhiding pictures based on cell value

Hi,

The last few days I've been working on a multiple choice quiz in excel.
I have a working version that picks questions from a column and answers from another, and presents it to the user. See attached.

Now I want the questions for chapter 1 to be pictures instead of text. I added some dummy pics in the doc I attached.
I used this tutorial.
It is supposed to hide all pictures and then display one on a specified location [U]if[U] that picture's name corresponds to a cell value (which is a vlookup formula).

But I get an error on the following line

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Run-time error '13': Type mismatch

Complete code for that sub:
(Me.pictures.visible should be false. Is still true in attached doc.)

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Does anyone see what I'm doing wrong?

I can't find object pictures, you can try something like

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