use Microsoft.office.Interop

[burque505]

@alsk, I just saw this. Your code runs for me without issue after I installed from Properties, as shown below the code.
 

Code:

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/*/ com Outlook 9.6 #ed6988d3.dll; com stdole 2.0 #5213fb64.dll; com Office 2.8 #29f388b5.dll; /*/

I installed it by going to Properties -> Com, and selecting "Microsoft 16.0, 9.6".
I know this was posted a long time ago, sorry (just joined).
Regards,
burque505