org.docx4j.wml.ObjectFactory factory = Context.getWmlObjectFactory();
int i = 1;
for (SwitchTestQuad tt : quads) {
//org.docx4j.wml.P p = factory.createP();
org.docx4j.wml.P p = mdp.addParagraphOfText(tt.val +" " + tt.format + " --> ");
p.getContent().add(createSimpleField(tt, "myvar"+i, true));
// Ok, let's add a custom property.
org.docx4j.docProps.custom.Properties.Property newProp = cpfactory.createPropertiesProperty();