code: private void setFixedValue(final String value) {
  		boolean toBeLogged = false;
  		if (log.isDebugEnabled() && (value != null && !value.equals(fixedValue) || fixedValue != null && !fixedValue.equals(value))) {
  			toBeLogged = true;
  		}
  		fixedValue = value;
  		currentValue = null;
  		if (toBeLogged) {
  			log.debug("setFixedValue: " + this);
  		}
  
  	}
docs: Sets a fixed value for this form entry which will only be changed when calling this method
  again. Calling {@link #resetValue()} does not change this value (in contrary to using
  {@link #setCurrentValue(String)}).
  
  @param value
  the value to be set