Piotr Kolawa

It is, but it depends on how your data in worksheet is structured. Does every column has exactly the same number of rows filled?

So you can add come ```counter``` to your code and store number or last filled row while you are processing current file. Since this library is able to save data...

This library so far does not have ability to read files. So the steps you are taking are like: I have data -> I'm placing it to the file. So...

```ws.cell(x,y).string("")``` method is meant for **storing data in the cells**, not reading from the cells. So you need to compare values first, and then store them in properly formatted/merged cell.

Can we close the issue?