I have a few UDF's that take up to 6 input parameters. I would like to give my colleagues a hand in what & how they should enter the argument data. How can I create the same Help text as Excel does when a user selects a function in the Insert Function Dialogue box. E.G., selecting DATE returns the ever so helpful 'DATE(year,month,day)', and the text 'Returns the numbver that represents the date in Microsoft Excel date-time code'. It would be nice to have this for my functions too, any advice?