There are two things I want to do.
The first is,
It is to record in "mylabel" which Processor was passed.
The second is,
Check "mylabel" and move the item recorded via Processor1 to Queue2.
But I have no knowledge to make this.
Like Jörg said, the triggers tab is the best way to achieve the label writing. You've actually got all of that set up correctly in your attached model. In order to pull the correct item, you need to specify the label value as a pointer and not a string. I changed this in the model as shown in the image below and it should behave as you've described. Hopefully this helps.
11 People are following this question.
