So are the numbers always whole numbers and you just want to add the .00?
If so, you can run a simple Set Field with a Substitute calculation on the field when the numbers are set:
Set Field [ Table::numberlist; Substitute ( Table::numberlist ; ¶ ; ".00¶" ) & ".00" ]
That will insert the decimal places at the end of each value and at the end of the last one.
Or if you wanted to do it progressively as you added a number to the list, use:
Set Field [ Table::numberlist; Table::numberlist & ".00" ]
Now if you have decimal numbers in there and you want to preserve their existing decimal places, that is more complicated. But I will leave that with you just in case this more simple solution works for you.
Thanks, as usual, David. Yes, I do anticipate needing more than just whole numbers on that list. As it turns out, in the last few hours, I decided my needs are more appropriately met by creating another table that holds values (one per record) which I'll see via a portal. This solves all the problems presented by using a multiline text field.