How can I rename an element (e.g.: Association) in Acceleo

Question

I've been working with Acceleo 3.2.2 for awhile lately but this is my first approach and there are many basic points that I'm still missing.. In my .mtl file I have created a new association for a class:

[anAssocClass.createAssociation(true, snk.aggregation, snk.name, 1, 1, snk.type, 
                                    true, snk.aggregation, anAssocClass.name, src.lower, src.upper) /]

How can I set a name to this new association? The API provides the operations

• setValue(stereotype: Stereotype, propertyName: String, newValue: String)
• eSet(feature: EStructuralFeature, newValue: OclAny)

but I don't know if they are what I'm in need of and how to use them neither (which stereotype/feature and how can I get them?)...

Does anyone know how to help me?