[Exporter add-on] How to export number from table to Excel?

Hello Everybody!

I have a question about this add-on: https://vaadin.com/directory#!addon/exporter
(I use 0.0.5.4th version.)

When I export a table what is contain some numbers, then in the generated xls file these values are strings and aren’t numbers! What can I do to prevent this mistake? Is exist any workaround?

Thank you very much for your help!

Ps: I found another add-on. (https://vaadin.com/directory#!addon/tableexport) Is this handling number values well?