This is a 6 year old thread, relating to a massively out of date version of TestComplete. You would have been better of simply posting a new question!
However. That aside ....
I'm not a JavaScript guy. But quickly looking at your code, a few things jump out at me ....
1. You are taking in your data from a Project Variable (a dictionary object?). They come from this within your loop, not from the Excel sheet?
2. Your loop is hard coded to 10. It has no idea how long your spreadsheet actually is! (You can check this!)
3. I'm not sure if JavaScript needs values to be converted to string before posting to log? You have a couple of data items you're trying to post which look like they could be numeric?
4. You apply "sheet" to a variable, but never use it. Instead you refer to the "book" and it's "active sheet". And this is just for the delete. You never read anything from it.
5. Each loop you always try and delete the second row? This is going to wreck the whole thing! Each loop will delete a row. And your loop is hardcoded to 10. So on loop 10, it should be looking at row 10. But if you have deleted rows as you go, you no longer have a row 10. Well, you do. But it will be empty. But you never actually read a row anyway!
6. You save after each loop iteration. Do you need to? You could just save once you're finished.
This code doesn't seem coherent. And doesn't seem to quite do anything right? I'm not sure what you're trying to achieve here?
Can you provide a little more detail on that front?