Need Helop with compass directions

[HATE_ETERNAL]

Hi everyone.

I have a problem with a compass mod that shows the wrong direction. It's always 90 degrees different from which direction I'm facing.
This problem was discussed in another playce on this forum, but there was only a solution (updated file) for a different compass mod.

In particular I use the "Waterkant Compass" from here.
Newer mods work fine. Also the default.

So what I want to ask for is, could someone describe me how I can fix that in the waterkant compass?

Thanks in advance, Maver.