How to use checkbox value list not predefined but entered later？
I want to use checked value entered by myself，how can I achieve this？
A "use values from field" value list draws values from a table could be used for this as you can then add records with new values to the table as needed. There's also an edit option that enables the user to add/remove values from a custom value list. But you will encounter a limitation with these methods when your field is formatted with check boxes or radio buttons: the field will not automatically increase in size or add a scroll bar if you add more values than can be displayed in the field.
On the other hand, a portal can simulate the look and action of check boxes and the portal's scroll bar can then make the number of "check boxes" you might have theoretically unlimited.
If you are interested in the portal approach, this teaching file has several working examples along with detailed documentation on how they work. The file is free to download and full unlocked but does come with a "shareware" style invite to say thank you via PayPal:
Adventures in FileMaking #2-enhanced value selection
thank you！ I will try it！
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