See https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/camunda-bpm-dev/r7U0hTKVqD8/f-usT-Ae-TAJ

Add convenience method to read camunda properties from model, e.g.

public String getCamundaProperty(BaseElementImpl modelElementInstance, String propertyName) {

Collection<CamundaProperty> properties = modelElementInstance.getExtensionElements().getElementsQuery() //

.filterByType(CamundaProperties.class) //

.singleResult() //

.getCamundaProperties();

for (CamundaProperty property : properties) {

// in 7.1 one has to use: property.getAttributeValue("name")

if (propertyName.equals(property.getCamundaName()))

{ return property.getCamundaValue(); }

}

return null;

}