Hello Sebasian,
Could you elaborate about what you mean by "VariableSize property from encoding arrey to rgb (1280x960x3)"? I am not sure if I understanding this description correctly. Do you mean you updated the VariableSize property (maximum length) of the "Encoding" field? This field is basically saying the maximum length you expect the "encoding" field to be. You can use the same value as you previously have in 20a.
As for "incorrect image encoding", I think this is talking about the actual "Encoding" field in the message does not match with the "Image encoding" defined in the block mask. If you are trying to read another Image or CompressedImage message from a different source, you would probably need to update the block mask "Image encoding" to match the new message.
For the message status, since this is a one time setup, could you try to re-publish one message from the hardware and see if it gets updated? Another way of verifying whether this is a hardware problem is to create a subscriber on either MATLAB or Simulink and see if you can get the latest message from the same topic.
Hope this helps,
Josh
