Kantu adds a _number when i play macro as loop

Recently i downloaded Kantu for chrome to automation the annoying labor of filling fields. The issue is that when i play the macro as loop, reading from a csv, the auto filling adds a number at the end of my data what causes inconsistency in the data that I store.
How can i delete that number or it does not can be deleted?
Help me.

Any test macro for us?