#Unparseable error

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c.carstens63826
edited 12/09/19 in Smartsheet Basics

Hi I am new to Smartsheet, I am trying to calculate a row call Total Billable for each month of for our total amount of jobs completed.

The format I'M using is as follows: -

=SUM(Total Billable820:Total Billable828) it comes up with the error #Unparseable

Can someone please advise me what I am doing wrong?

 

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