Extracting a value from a json response body and raising it by 1

[robsegeren (Rob)]

Hi everybody,

I retrieve data with a GET and then use the values ​​in a POST. There is a field whose response I want to increment by 1 by default. So if the response from the GET is 5 I want to post 6. To get the content from the GET and write it to the variables to use as POST I wrote the following in Tests:

valueincomeRelationshipNumber = bodydata._embedded[0].incomeRelationshipNumber
console.log(“value of incomeRelationshipNumber:” + valueincomeRelationshipNumber)
pm.environment.set(“Income Ratio No.”, valueincomeRelationshipNumber);

What should be added to this so that the result is always +1?

[arlem (Arlémi Turpault)]

Hey there,

That question has already been asked a few times, have you tried any of these answers?

How to increase environment variable when the value is a number?

Hi @Kyortush_13, Welcome to the Community! Postman stores env variables as strings. In order to perform arithmetic operations on env variables, you need first to parse it as Int then add and again set variable env variable. Please find the below snippet for reference. Assuming the initial value is stored in variable a. pm.environment.set("a",parseInt(pm.environment.get("a"))+1);

How to create a variable automatically increment by 1 after every request in postman

You’ll need to store the value in variable. (Collection or Environment). You then update your request to use the variable value. {{variableName}}, similar to how you’ve got the random variable set. In the Tests tab for the request, you will then retrieve the variable, increment it by one and then resave it. let myVar = pm.collectionVariables.get("variableName"); myVar ++ // increment by 1 pm.collectionVariables.set("variableName", myVar); Using variables | Postman Learning Center