On Close Clear ComboBox1 - ListIndex -1 and Clear not working

Hi all, I'm trying to reset an ActiveX ComboBox on closing of a workbook and am struggling to get it to work (the rest of my BeforeClose code works fine). This is my code for before close on ThisWorkbook:

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I've tried a couple of different methods which I've left in but commented out so as I know what I have already tried when it comes to attempting each. Am I doing something really simple wrong as often the case?

Thanks gmr, that didn't work for me. I've also tried these to no avail:

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and

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That one didn't work either, thanks anyway for helping though. Never mind, I'll just have to hope the user doesn't Ctrl+S it and then it will open at the top of list where I've saved it to.