[GS] How to generate low land tiles for custom WB map

[Nahimi]

I am making quite a large custom map (not large enough for sea level crash) and was wondering if there was any way to generate coastal low land tiles? Manually plotting each of them takes a lot of time.

I saw the option for "Coastal Lowland" and tried both Map generator and Matching Flatland options when choosing the custom WB map, but it does not seem to work.