Number format on PDF export, gp v3.1.3103

Hello,
In my w10 Spanish, exported cost in PDF are shown as format number
NNNNNN.N

I mean… no separator for thousands and unable to “round” with no decimals.

Is there a way to change this format number for costs?
And BTW, can it be also changed as it is now on the screen with thousands separator?
Thank you!

I have submitted a new ticket: Use locale-aware number format in PDF export · Issue #1991 · bardsoftware/ganttproject · GitHub