I have an ASP.Net Web application where I embed an interactive Excel spreadsheet. The user should be able to interact with the spreadsheet. I embedded the spreadsheet with code from [Office Support](https://support.office.com/en-us/article/share-it-embed-an-excel-workbook-on-your-web-page-or-blog-from-onedrive-804e1845-5662-487e-9b38-f96307144081). The embedding itself works to an extent-- user can click around, but webpage gets no info.

In order to get more info, and be able to write using an ASP.Net Button I turned to an example using the [Excel Services ECMAScript (JavaScript) API](https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-2010/hh315812(v%3Doffice.14)). The one thing causing problems is the line: 

`var fileToken = "SD310A16DD64ED7E41!112/3533661997762444865/";` 

I tried finding the token using the example [here](https://www.jkp-ads.com/Articles/EmbeddedExcel01.asp). 

The embed code in this particular example is: 

`<iframe title ="Preview" scrolling="no" marginheight="0" marginwidth="0" frameborder="0" width="402px" height="346px" style="padding:0;background-color:#fcfcfc;" src="https://r.office.microsoft.com/r/rlidExcelEmbed?su=-5430218907388983095&Fi=SDB4A3FCAC9C7848C9!285&ak=t%3d0%26s%3d0%26v%3d!AJHqJpkd-Q5axR8&kip=1"></iframe>` 

and the file token is: 

`SDB4A3FCAC9C7848C9!285/-5430218907388983095/t=0&s=0&v=!AK3ybHnbJCLh5H0`. 

This example was not helpful at all because my embed code is of the form:

`https://onedrive.live.com/embed?resid=2EE19DD0B45C2F85%2156366&authkey=%21AC2IkSn6J6_kejU&em=3&wdDivId=%22myExcelDiv%22&wdDownloadButton=1&wdHideGridlines=1&wdHideHeaders=1&wdAllowInteractivity=0&wdAllowTyping=1`. 

Therefore it has been pretty impossible to find the token in the manner of the example.

I tried using `2EE19DD0B45C2F85%2156366` as the file token but the code I copied from the ECMAScript API returns the error: Async operation failed!. 

How can I find the file token for my embedded Excel spreadsheet?