I have several processes in my camunda process model. I want to sort them after a numerical order, therefore I added a variable in each process which I called "process\_order" and giving them a number which represents the order (1 is the first priority, 2 is second priority etc.) as shown in the picture below. 

![process_order in extension property on the whole process](https://i.stack.imgur.com/K5NoE.png)

In the BPMN file it looks like this: 

![bpmn file](https://i.stack.imgur.com/8HUZj.png)

So I'm wondering how to get the extension property out using Java? 

Thanks for any reply :)