areaDetector Overlay problem

[Jörn Dreyer via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

currently I have a problem to get the overlay plugin working. I would like to draw a cursor onto my image.
I have an ADBase set up with an asynPort "cam1". I connect an Overlay plugin "OVER1" to the output of this asynPort with asyn address set to 0.
I defined the cursor "CURSOR1" at NDOverlay8 line 5 and enabled it.
An NDStdArray is connected to asynPort "OVER1".
And here the problem starts. If I set the asyn address to 0, I see the original image from the camera.
If I set it to 1...X nothing happens. No more images are seen.
Shouldn't the overlay plugin add another image to the output att a defined address (5 in this case)?
Or did I understand the functionality of plugins completely wrong?

Any help appreciated.

Joern