Error with set difference function

I would like to compare 2 arrays B,S of size (1691,1) and (861,1), and find the values unique to array B. I get the following error when I used the setdiff function.

"Error using cell/setdiff>cellsetdiffR2012a (line 291)
Input A of class cell and input B of class cell must be cell arrays of strings, unless one is a string.
Error in cell/setdiff (line 83)
    [varargout{1:nlhs}] = cellsetdiffR2012a(varargin{:}); "

Note: The values of the array are in the following format,

['1.1.1.100';'1.1.1.101';'1.1.1.141']

Answer 1

[dpb]

['1.1.1.100';'1.1.1.101';'1.1.1.141'] is a char() array, not cellstr or string

Either

>> c=cellstr(s)
c =
3×1 cell array
  '1.1.1.100'
  '1.1.1.101'
  '1.1.1.141'
>>

or

>> string(c)
ans = 
3×1 string array
  "1.1.1.100"
  "1.1.1.101"
  "1.1.1.141"
>>