Excel Write Component

You have a great set of tools here, but i'm really struggling with one.

I don't know if I'm using the "write excel" component properly. I can't seem to write into more than one column. C1 C2 C3 all say "data in the first column" as the description, and the  input name seems to indicate that they can be written to successive columns.

I would make very good use this component if I can get it working correctly. I end up using multiple components, so each column has its own component on the page.

Any suggestions?