Doubts in report field

Nandhini Expensify Customer Posts: 4

In Report Exporter API call, we can export report fields but all non-alphanumerical characters in the custom field must be replaced with underscore(_).

Consider there are 2 fields

Field 1] and Field 1[

While replacing with underscore both becomes Field_1_

How to differentiate between both the fields?

Please help me understand this