How to retrieve Jenkins build parameters using the Groovy API?

Question

I have a parameterized job that uses the Perforce plugin and would like to retrieve the build parameters/properties as well as the p4.change property that\'s set by the Perf

Answer 1

For resolving a single parameter (I guess what's most commonly needed), this is the simplest I found:

build.buildVariableResolver.resolve("myparameter")

in your Groovy System script build step.