required replicant

ghost

Hi,

i'm looking for a way to let an author choose between 2 containers but to guarantee that he chooses one of them.
I used to use a replicant like
<replicant min="0" max="1" combination="or">
<container name="ex_1">
....
</container>
<container name="ex_2">
....
</container>
</replicant>

this way the user can choose, but also can save the dcr without choosing any of the two items which should be avoided.
if i use <replicant min="1" max="1"...
TS just preselects the first container and lets no way to choose any more.

any idea anyone?

Thx a lot
G.