if ( modelValue instanceof Integer
if ( modelValue instanceof Boolean || modelValue instanceof Integer
	public String getSelectedExprValue( )	{		String exprValue = null;		if ( selectedIndices != null && selectedIndices.length > 0 )		{			int firstIndex = selectedIndices[0];			Object modelValue = modelValueList.get( firstIndex );			String viewerValue = (String) viewerValueList.get( firstIndex );			if ( modelValue instanceof Integer					|| modelValue instanceof Double					|| modelValue instanceof BigDecimal )			{				exprValue = viewerValue;			}			else			{				exprValue = "\"" + viewerValue + "\"";			}		}		return exprValue;	}