Thanks for all the input! Definitely very helpful, but I'm still having issues getting this to work. Straight off, using FreightTrain's code didn't change the point size. I suspected I needed the StringToNumber function, but I was calling it wrong. Step's suggestion showed the correct usage, but my rule still didn't work correctly.
Then I tried recreating tobarstep's Drag And Drop rule. This didn't change my point size either. Then I converted that to JavaScript and made a couple of changes and now I've got something that changes the point size on 1-9 (as expected) but it also prints the same digit at the original point size right beside the larger number. Here's the rule:
if (StringToNumber(Field("TableNo")) < StringToNumber("10"))
{
return "<span pointSize=230>" + TaggedDataField("TableNo") + "</span>";
}
return "";
And a screenshot of the first record as it previews with this rule inserted:
http://forums.pti.com/picture.php?albumid=20&pictureid=34