Okay, sometimes it helps just to STATE the problem. I searched and found where the SELECT FIELD was hiding. Now that FM knows where to collect the data across Found Set: it does!!
If anyone else has this problem just go into the script and select the field from the options on the arrow after the field you are trying to collect emails to.
Obscurus obscurantum!. Another day of reading between the lines in Filemaker land.
Not sure what lines you had to read between. When you look up Send Mail in FMP help, it clearly tells you to click the button with the black triangle (showing you a picture of the button) if you want to specify values from an "address book (Windows), field, or calculation."
The BCC box is then clearly listed as one of the places where you'd click that button to accomplish that result.
Thanks Phil. It's always a pleasure to get a put down, isn't it? You NEVER do that to men, I note.
I still maintain that the documentation for Filemaker is often obscure, the more so because there are so few places to get help.
Nonetheless, I have found your advice helpful on many occasions.