I love my new MB Pro, a fantastic pcs of kit. However yesterday evening me and MB had our first "falling out"

I was writing a an export-template, and I can't make it work, - NO WAY!
Template:
# Standard CSV template WIND
#
$# date, time, avg wind speed[m/s], avg wind speed[km/h], winddir degress, winddir direction
[YYYY]-[MM]-[DD],[hh]:[mm],[wind0wind-avg.1:--],[wind0wind-avg=kmh.1:--],[wind0dir-avg.0:--],[wind0dir-avg=endir.5:-----]
Result:
# date, time, avg wind speed[m/s], avg wind speed[km/h], winddir degress, winddir direction
2021-03-16,00:00,1.6,5.6,338,338.00000
2021-03-16,01:00,1.6,5.8,342,342.00000
2021-03-16,02:00,2.0,7.0,339,339.00000
2021-03-16,03:00,1.6,5.9,339,339.00000
2021-03-16,04:00,1.2,4.2,352,352.00000
As you can see, using Converters works fine - EXCEPT FOR the "endir", it is being ignored completely by the export.
No way I can make this "endir" work, so pls help.
It's OK to point out to me that I have missed something obvious, and indicating that my brain needs a server service check, as long as you point me in right direction

/kris