How use the data from csv or excel file for the data assertion values in Test Tab?

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My question:
Is this way is correct for use the data from csv or excel file for the data assertion values in Test Tab?

Details (like screenshots):

How I found the problem:
i try to do it

I’ve already tried: I tried this . But get an error: ReferenceError: duration is not defined

If you’re referencing a column heading in the datafile, the value in the .get() should be a string.

pm.iterationData.get('duration');

In your case your referencing a local variable, which isn’t defined.

Thanks @dannydainton . I try it and its run perfectly