Local variables in an multi-instance service task

Camunda 7 Topics
1

I am implementing a multi-instance service task like this

image
image975×225 31.9 KB

myCollection is a list of maps. I am getting the elements and adding a new variable to each map like this using a Java class that extends AbstractBpmnActivityBehavior

public class Test extends AbstractBpmnActivityBehavior{
    @Override
    public void execute(ActivityExecution execution) {
        var inputData = (Map<String, String>) execution.getVariable("myItem");
        inputData.put("additionalVariable", "additional value");
    }
}

You can see that I am not updating the process instance variables per se, but just adding a new entry to the object inputData

However, I see that myItem variables are being updated automatically as shown below

image
image935×216 31.7 KB

image

I wanted to ask why the value of myItem is updated automatically even if I did not explicitly update the value with execution.setVariable(…)