Specify one variable in the input table to become the new variable names in the output table. Use a positive integer, a variable name, or a logical vector containing a single true value. Unable to convert the variable specified as ''VariableNamesSource'' to variable names. The variable specified as ''VariableNamesSource'' must provide one unique piece of text for each row of the input table. Using a variable that is a multidimensional array is not supported. The variable specified as ''VariableNamesSource'' must not be included in the data variables. Input table must not contain variables that are themselves tables. Consider using splitvars to create separate variables before calling rows2vars. Input table must not contain variables that are multicolumn or N-dimensional arrays. Consider using splitvars to create separate variables before calling rows2vars. Input table must not contain variables with zero width. The number of rows in the input table must be fixed at compile time. ''VariableNamesSource'' is not supported in code generation. ''DataVariables'' value must be constant. Variable naming rule must be constant. Row names in input table must be constant.