Following script outputs "All vars: []" to log instead of list of variable names and values
Configuration have several variables and they are accesible through vars.get(<name>).getValue()

groovy:
import com.pmease.quickbuild.variable.VariableWrapper
for (VariableWrapper var : vars.getAll()) {
    logger.info(var.getName())
    logger.info(var.getValue())
}
logger.info("All vars: " + vars.getAll())