Bot is adding @ symbol to formulas when running, how to prevent/remove?

I am trying to add a formula an Excel workbook using AA, but the bot adds the @ symbol making it not work correctly.  Is there a way to use the Set Cell Formula to not include the @ symbol when the bot runs?  

=FILTER(UNIQUE($sMasterDataTabName$!F:F), (UNIQUE($sMasterDataTabName$!F:F) <> 0))

Turns into

=@FILTER(UNIQUE($sMasterDataTabName$!F:F), (UNIQUE($sMasterDataTabName$!F:F) <> 0))