How to reference local parameters?

We can have ParameterDeclaration defined on a lot of scenario elements, especially CatalogElements.

Let's assume we have two Controller elements, and both of them have a parameter MyParam. The content of a catalog file is visible below:

<?xml version='1.0' encoding='UTF-8'?>
<OpenSCENARIO>
  <FileHeader revMajor="1" revMinor="2" author="Stracabosko, Daniel AVL/HR" date="2023-11-13T23:41:55" description=""/>
  <Catalog name="ControllerCatalog">
	<Controller name="Controller 2">
	  <ParameterDeclarations>
		<ParameterDeclaration name="MyParam" parameterType="double" value="8.333333333333334"/>
	  </ParameterDeclarations>
	  <Properties/>
	</Controller>
	<Controller name="Controller 1">
	  <ParameterDeclarations>
		<ParameterDeclaration name="MyParam" parameterType="double" value="8.333333333333334"/>
	  </ParameterDeclarations>
	  <Properties/>
	</Controller>
  </Catalog>
</OpenSCENARIO>

My question is, how do we uniquely reference these local parameters using the VariableAction?

Please note that we have local parameters from OpenSCENARIO 1.0 that could have been referenced with ParameterAction.