How to indicate specific format for number values at the pivot tables component?

Hello,
We have your pivot tables component integrated to our web product, and we are having some problems with customers that have the numbers in Spanish formatting ( comma for decimals and dots for thousands). The problem is that the sums that are generated with pivot tables component are not accurate. I'm thinking that we might need to indicate to pivot tables how to treat the number formatting? I checked the doc, and found this link: https://www.flexmonster.com/doc/managing-data-presentation-csv/, but it doesn't indicate anything about number formatting. Can you guide me to do this?

Here is the CSV that we use as a data source: http://datos.energiaabierta.cl/rest/datastreams/244590/data.csv?pArgument0=2017

We are doing the following operation with the pivot tables (see attachment-01.png). I'm also attaching another image with the correct sum using excel pivot tables (attachment-02.png) 

Here is the pivot tables integration (click on "pivotear" icon on the left sidebar): http://datos.energiaabierta.cl/dataviews/241243/generacion-bruta-en-sistemas-medianos/

Thanks in advance.
Ignacio.-