Yet another decimal separator post

Easy: I want to change the decimal separator from dot "." to comma "," in a CDE table chart dashboard. However, so far I haven't been able to.

I've tried changing the locale to different spanish (es_MX, es, es_ES...) in my browser without much success. Other than that there is not much else I've done.

Is there any property in table charts that I'm missing? Maybe a combination of column types and column formats to solve it?

I don't really understand why this isn't as easy as it is in the Data Integration tool or, if it really is and I am missing it completelly.

Thanks