About Maxmum Content in Queue when it sets '1'...

Dear.

I found a strange control in Queue Maximum content when it is set by '1'.
I set the Maximum content to '1' like attached captured image.
But the Queue of 'QueIn_R' has two flowtems.
The downstream is the conveyor.
Why does it happen?

When I set it as '2', it has two flowitems like 'one' as maximum.
What's the problem in Queue object?
Or other problem in my model?

I want to hear yours guide.

Thanks.

I found what is the problem of it.
It is not a Queue Maximum content setting.
It is OK.


I found my custom code to have the problem.
I fixed it.