In webmvc-config.xml look for
<bean class="org.wwarn.cb.web.ApplicationConversionServiceFactoryBean" id="applicationConversionService"/>
This will give you the name of the class to edit so go and find that class and add the following code:
Note that the installFormatters method is deprecated in 3.1 but as that is what Roo is currently generating I’m leaving it alone
public Converter getStudyConverter() { return new Converter() { public String convert(ChassisStudies source) { return source.getStudyId(); } }; } @Override protected void installFormatters(FormatterRegistry registry) { super.installFormatters(registry); // Register application converters and formatters registry.addConverter(getStudyConverter()); }