I get all parameters of a build using - def myparams = currentBuild.rawBuild.getAction(ParametersAction).getParameters()
`myparams` is object of `java.util.Collections$UnmodifiableRandomAccessList` hence if try to add another parameter to it like - myparams.add([$class: 'StringParameterValue', name: 'Test', value: "TestValue"]) then it fails with error - java.lang.UnsupportedOperationException Please guide how to add parameter to existing parameters. -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/7f312f1a-7cf3-4c17-8ded-2ba3622b17d0o%40googlegroups.com.