It doesn't matter what tool you use, the only thing that is important is to make an accompanying Regions file for the land class file.
You want coconut groves, and they do exist in FS X. They display when you assign land class 145 Deciduous Tree Crops. But, coconuts will only display in Region H - Tropical Pacific. In Panamá this land class will display olive trees.
So, you want to make a Regions file that will change the Region only where you have assigned land class 145.
Unfortunately, there is no tool for making Regions files, or Seasons files, or Population files, etc.
So, you must use a land class tool to create the source image (where the Regions value is assigned) and then compile manually.
The advantage of EZ-Landclass X is that you can easily replace one value with another. But, if you don't know how to use it, then simply use SBuilderX to make the Regions source image.
First, make the land class file as indicated below and compile it. Place the compiled bgl file somewhere safe so that you don't overwrite it with the next operations.
Then, in SBuilderX, everywhere you have placed land class 145, change the value to 7 (don't worry that this is land class Tall Grasses and Shrubs, because it will not be used as a land class file.)
Once you have done that, compile this so that SBuilderX will generate a new source image with that value 7, but discard the bgl file (it is land class and you already made the correct file previously.)
Now, you have a new source image. Simpy follow the instructions below on modifying the ini file and compiling manually to get a Regions file.
How do you know which RAW image source file to use? All these files in SBuilderX are named according to their Cell identifier, because land class is made in that grid. If you don't know the Cell you are working in, and you do not know where to look for it in the SBuilderX status bar, then use the date and time stamp of the file. In Windows Explorer, all files can display the date and time when they were created. Simply search the Work folder for the RAW image that corresponds most closely to the date and time when you created that file. Normally, that is the RAW image source file that you want.
Best regards.
Luis