Solution
Converting variant data to a readable format can be difficult because it contains both the actual data and metadata about the type and format of the data. Therefore, there is no single function to convert variant data to a readable string. Instead, you can refer to the
Data Type Parsing VIs palette to parse the variant data appropriately. An example of how to properly implement these functions can be seen in a discussion at
NI Community: Writing data to a text file from a cluster.