Is this the same request as?
Pre-request-script post take id and put on get request - 
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Did you just create another account and ask the same question?
If not, then the same advice applies here.
This type of activity is covered in the Postman Learning Centre.
If you are new to Postman, then I would suggest a visit to the Learning Centre.
Overview | Postman Learning Center
Including the Postman Training links under “Resources”.
I would recommend the “Galaxy APIs 101” course first as it gets you used to the application features and GUI.
Then the “Galaxy Testing and Automation” course which teaches you how to assert the responses. It includes defining and using variables from responses and chaining requests.