[R] Function bug when sourcing

[Ernie Stokely]

I am unable to figure out why I get this error in the code below:

Error in as.Date(data.dates.x, format = "%m/%d/%Y") :
   object 'data.dates.x' not found

Here is the code with comments deleted:
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ConvertExcelDateData <- function(ticker.prices, data.dates)

      data.dates.x <- as.vector(unlist(data.dates))

      data.dates.x <- as.Date(data.dates.x, format = "%m/%d/%y")

  return(match(data.dates.x,time(ticker.prices)))

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I'm sure it is something obvious, but I am blind to it. Help appreciated.