Compile multiple modules in one project

I am trying to follow this example:
https://groups.google.com/g/google-web-toolkit/c/sjh6AGfeCKQ/m/Dp2fNL6HAQA
J

So, I put this into my pom.xml:
<build>
<plugins>
<plugin>
<groupId>net.ltgt.gwt.maven</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>1.1.0</version>
<extensions>true</extensions>
<executions>
<execution>
<id>DiagonalSlitherlink</id>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<failOnError>true</failOnError>
<logLevel>INFO</logLevel>
</configuration>
</execution>
<execution>
<id>DiagonalSlitherlink2</id>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<failOnError>true</failOnError>
<logLevel>INFO</logLevel>

<moduleName>com._3dmathpuzzles.gwt.DiagonalSlitherlink2</moduleName>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

But I get this error from Maven:

[INFO] Scanning for projects...
[INFO]
[INFO] -----------------< com.3dmathpuzzles:3DMathPuzzlesWeb
>-----------------
[INFO] Building 3DMathPuzzlesWeb 2.1.0
[INFO] from pom.xml
[INFO] --------------------------------[ war
]---------------------------------
[INFO]
[INFO] --- clean:3.2.0:clean (default-clean) @ 3DMathPuzzlesWeb ---
[INFO] Deleting C:\OneDrive\Dev\3DMathPuzzlesWeb\target
[INFO]
[INFO] --- resources:3.3.0:resources (default-resources) @
3DMathPuzzlesWeb ---
[INFO] Copying 0 resource
[INFO] Copying 52 resources
[INFO]
[INFO] --- compiler:3.10.1:compile (default-compile) @ 3DMathPuzzlesWeb
---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 65 source files to
C:\OneDrive\Dev\3DMathPuzzlesWeb\target\classes
[INFO]
[INFO] --- gwt:1.1.0:compile (default-cli) @ 3DMathPuzzlesWeb ---
[INFO]
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 4.939 s
[INFO] Finished at: 2024-12-28T10:24:00-06:00
[INFO]
------------------------------------------------------------------------
[ERROR] Failed to execute goal
net.ltgt.gwt.maven:gwt-maven-plugin:1.1.0:compile (default-cli) on project
3DMathPuzzlesWeb: The parameters 'moduleName' for goal
net.ltgt.gwt.maven:gwt-maven-plugin:1.1.0:compile are missing or invalid
-> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the
-e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions,
please read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/PluginParameterException


Thank you,
Neil

--
Neil Aggarwal, (972) 834-1565, http://www.propfinancing.com
We offer 30 year loans on single family houses!

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