How to add Row number in repeater area fields?

I have a repeater area in my chronoform and I would like to a serial number with the field Label like

Name - 1
Name - 2
Name - 3 etc when the user click Add
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I tried Name - {var:area_repeaterxx .key} but the row number starts from 0 like Name -0 etc
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How to start the serial number from 1 ?

Since nobody replied for this question, I am afraid there s no solution for this!
But I hope there will be some JavaScript solution. Can anyone help me ?