You might have intended to add the character vector ''{0}'' as a variable to a one-row table. To store text data in a table, use a string array or a cell array of character vectors rather than character arrays. Alternatively, add that variable to the table with an assignment using dot indexing. Specify either ''Before'' or ''After'' and a location to move the variables to. Specify either ''Before'' or ''After'', but not both. Specify one new variable name for each variable being added to the table. New variable names must be a character vector, string array, or cell array of character vectors. Specify a single location as a positive integer, a variable name, or a logical vector containing a single true value. Using a {0} as a location is not supported. Specify a location as a variable name, a positive integer, or a logical vector containing a single true value. Using a vartype subscripter to specify variables to move is not supported. Use a character vector, string array, cell array of character vectors, or numeric or logical indices. You might have intended "{0}" to specify a parameter name. However, ADDVARS requires parameter names to be specified as character vectors. Use addvars(..., {0}=Value) or addvars(..., ''{0}'', Value) instead. The value of ''Before'' or ''After'' must be constant size. Duplicate variable names are not supported. Specify 'NewVariableNames' as Constant. To add a new variable to the table, the number of rows must match the height of the table. New variable names must be specified.