Multiple relation

Hi.

I'm having problem in dealing with the property name.
Here is the part of coding:

String propertyName = "hasPlantIn";

gate.FeatureMap features = Factory.newFeatureMap();
features.put("propertyName",propertyName);

Instead of having one property, I'm insist to create a multiple propertyName for populating the ontology for my project and i have stuck here. Can you please help me out.