The pom.xml includes bsh version 2.0b6. That's the latest release of "old" Beanshell (from beanshell.org) available on Maven. However, IIQ (and presumably IDN) use a different version, 2.1.8, from an entirely different repository. This is a continuation of the "old" Beanshell, which was itself abandoned around 2018.
The "beanshell2" repository includes a number of fixes, including language support and bugfixes not present in 2.0b6. It will also run in JDK 9+.
Since this isn't available in Maven, it will need to be included with the tool.
The pom.xml includes bsh version 2.0b6. That's the latest release of "old" Beanshell (from beanshell.org) available on Maven. However, IIQ (and presumably IDN) use a different version, 2.1.8, from an entirely different repository. This is a continuation of the "old" Beanshell, which was itself abandoned around 2018.
The "beanshell2" repository includes a number of fixes, including language support and bugfixes not present in 2.0b6. It will also run in JDK 9+.
Since this isn't available in Maven, it will need to be included with the tool.