99d3ac2e_ok_in_the_browser_and_in_Excel__Works_like_this_in_Excel
[This function] RTD (real-time data) If values that have been returned by an RTD function are stored in a workbook, those values are displayed. If no values are stored in the workbook, a #N/A error is returned. [Works like this in Excel] 
Returns real-time data from a program that supports COM automation.
Differences between using a workbook in the browser and in Excel