Unable to refer the values from csv and store it to POST request variable

Hi @sattivasudevan

I think, the problem, and the solution is the same as here: Unable to pass value into the body of post request - #2 by bandorko

Variable substitution only works in template strings : JavaScript Template Strings

So you have to use either:

Email: `${user.username}`,

or

Email: user.username,

I hope this helps