Create a drop down table in Word and auto populate in another section

I have a word document that we use for our office. We send out three different types of the same letter based on what we test the person had done. I found how to create a drop down selection box so that I can have one template for all three letters. What I need to know now is how to have the selection of the drop down box automatically populate in an additional section of the document. (I do not want to add another drop down box that I manually select as I want it to become easier).
For example in the first paragraph it states "you need to call and schedule your blah blah test". In paragraph three it states "If you have any question about your blah blah test". I want the second "blah blah" to automatically update once you select it in the first paragraph.
Asked Jan 09, 2017

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