Hi Andrzej, thanks for the feedback. I'll have a 2nd look at --product-version. The default value is documented as 1 but in the java code the value 100 is used. So, I can probably use major = productVersion / 100; minor = productVersion % 100; Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Dienstag, 17. Januar 2017 14:44:25 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] [Patch] set map-version in img header Hi Gerd, your patch seems to working correctly, see attached screenshot form chartplotter. I have noticed, that product-version uses other format, product-version=120 is interpreted as 1.20 by Map Product Manager. Currently product version goes to TDB and info.xml, I think it can be used for gmapsupp.img header too, unless anyone knows distinction between these 2 values. Putting version into tiles and preview probably isn't useful, but does no harm anyway. -- Best regards, Andrzej