[R] When using ACF, receive error: no applicable method for 'ACF' applied to an object of class "c('double', 'numeric')"

[evt]

I am guessing this is a very simple question, but this is only my second day
with R so it is all still a bit imposing.

I am trying to run an autocorrelation.

I imported a CSV file, which has one column labeled "logistic".

I ran the command:
ACF(data$logistic,maxLag=10)

However, I received the error:
Error in UseMethod("ACF") : 
  no applicable method for 'ACF' applied to an object of class "c('double',
'numeric')"

I am thinking perhaps I need to change the data type, but I really don't
know how (or if that is even the problem).

Your suggestions are very much appreciated!
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