Input different payload value

For example i have list text (example.txt) contain 3 lines:

[email protected]
[email protected]
[email protected]

And into the request header payload, i will insert a code, but we know if i click start, the OB will make the same value in all changed values < EMAIL >

The payload that i want it to be like this:
“insert”:{“answer":"[email protected]”},{“answer":"[email protected]”},{“answer":"[email protected]”}

But you know when i put < EMAIL > he will make [email protected] in all fields, and i dont want it like this

Is there any trick for this ? even the START button will must keep going, the same 3 first lines will keep repeating in each job, whats the solution

Your context not clear, you can able to do by making the some changes in environment.ini file in settings to achieve your goal. But the for 2nd job what the ob will take ?? There as no proper separators

Sir for example, in every clicking START
The payload will read 5 first emails from the file.txt then a submit will happen
i want how to let the openbullet read them 1 by 1
email1, 2 , 3, 4, 5