Flowable 6 IntroTask.java

public class IntroTask implements JavaDelegate {
    
    public void execute(DelegateExecution execution) {
        if (execution.hasVariable("intro")) {
            System.out.println("Intro variable available with value " + execution.getVariable("intro"));
            execution.setVariable("variablePresent", true);
        } else {
            System.out.println("Intro variable not available");
            execution.setVariable("variablePresent", false);
	}
    }
}