Now I get it.

If fails because you cannot ask the client (Send ClientAction ...) to fill an object before it has been told that the object exists.

Therefore moving "Send Activate" 3 lines up will make it function. Activate informs the client of the objects in the dynamic container.

However, Activate should only be sent once when all the objects of the container have been created.

So if I have a number of comboforms I have to

1. create all the objects of the container
2. send Activate of the container
3. then send client actions to the newly created objects.

Good to know

-Sture

-Sture