code: private void hitCountChanged()
  	{
  		if (!fHitValueButton.getSelection())
  		{
  			removeErrorMessage(fgHitCountErrorMessage);
  			return;
  		}
  		String hitCountText = fHitValueText.getText();
  		int hitCount = -1;
  		try
  		{
  			hitCount = Integer.parseInt(hitCountText);
  		} catch (NumberFormatException e1)
  		{
  			addErrorMessage(fgHitCountErrorMessage);
  			return;
  		}
  		if (hitCount < 1)
  		{
  			addErrorMessage(fgHitCountErrorMessage);
  		} else
  		{
  			removeErrorMessage(fgHitCountErrorMessage);
  		}
  	}
docs: Validates the current state of the hit count editor. Hit count value must be a positive integer.