Build and upload XLS add-in into MS App store

Hi there! we have XLS layout of calculations that we would like to offer as premium "add-in" in Microsoft App store. Did you already do that before? Please let us know. >We will provide you XLS with functions (basically, its about cash flow time series). >You will build and upload this "add-in" so common users could download add-in from MS app store and use it in their desktop XLS. Please note that this is not the first attempt to ask for it on Freelancer. Two previous attempts failed as MS App store stop accepting visual studio code and first programmer didn't realised that. Second programmer build javascript code, however didn't make upload there. It is therefore important that you already did upload previously and you absolutely 100% know how to create add-in for successful upload. Have a great day and thanks a lot for your help!