SVG units and dimensions

Yeeeeeeaaaaaahhhhhh!!! Thanks so much JA12 !!! That was the key!! Problem solved !!!IkariShinji thanks to you too, I use plain svg cause I have read that it is more compatible with blender.
For example it maintains the proper Inkscape axis origin when you import the svg in Blender.
All the tutorials I’ve seen about exporting svg to Blender recommend to use plain svg format