code: public static void setValue(Progression model, int value, String comment) {
  		if (model != null && value > model.getValue()) {
  			model.setValue(value, comment);
  		}
  	}
docs: Set the value of the given task progression,
  if not <code>null</code>.
  The value must be greater than the current progression value.
  
  @param model is the progression to change
  @param value is the value to add to the progression value.
  @param comment is the comment associated to the progression.