APEX 5 How to write selected Checkbox for each value in separated rows?

i have a Checkbox Item in my Apex Form which gets everything from a LOV. There is

1 2 3 4 5

source is my Database Column.

If i submit this form Apex writes me for example
ID:1 Checkbox_value: 2:3:5
in my table.

But i need it in separated rows. Like:
ID: 1 Checkbox_value: 2
ID: 1 Checkbox_value: 3
ID: 1 Checkbox_value: 5

I did not find any options at the Checkbox item. Can someone help me with a Idea?

Thanks a lot :)