How to add bpmn:resource using the Camunda Modeler

BPMN & Modeling Discussion & Questions
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Hey Guys,
Is there a way to add a bpmn:resource node in the bpmn file?
I tried to add the following node in the bpmn:

<bpmn:resource id="1" name="sampleHumanResource" />

but when I compile the bpmn this is what I received back:

 Error: URI=null Line=4: cvc-complex-type.2.4.a: Invalid content was found starting with element 
 'bpmn:resource'. One of '{"http://www.omg.org/spec/BPMN/20100524/MODEL":documentation, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":extensionElements,
 "http://www.omg.org/spec/BPMN/20100524/MODEL":supportedInterfaceRef,
  "http://www.omg.org/spec/BPMN/20100524/MODEL":ioSpecification,
  "http://www.omg.org/spec/BPMN/20100524/MODEL":ioBinding,
  "http://www.omg.org/spec/BPMN/20100524/MODEL":auditing,
  "http://www.omg.org/spec/BPMN/20100524/MODEL":monitoring,
  "http://www.omg.org/spec/BPMN/20100524/MODEL":property, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":laneSet, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":flowElement, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":artifact, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":resourceRole, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":correlationSubscription, 
 "http://www.omg.org/spec/BPMN/20100524/MODEL":supports}' is expected.

And this is the node where I defiened the namespaces:

 <bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" 
 xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" 
 xmlns:di="http://www.omg.org/spec/DD/20100524/DI" 
 xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" 
 xmlns:camunda="http://camunda.org/schema/1.0/bpmn" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bpsim="http://www.bpsim.org/schemas/2.0" id="Definitions_1" 
 targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="1.11.3">

I am asking this because the bpmn:resource tag is defined also in the bpmn schema as you can see: https://www.omg.org/spec/BPMN/20100501/Semantic.xsd
so I do not understand why camunda should not be able to parse it.

Thanks,

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