This node takes a base directory path, a file name, and a file extension to create a new file path. Inputs can be entered in the configure dialog, or optionally set by flow variables. The output is a flow variable, which can typically be used as input for a writer node (e.g CSV Writer, Table Writer, etc).
This legacy file handling node has been replaced by Create File/Folder Variables and will be deprecated in the foreseeable future. For further information about the new file handling framework see the File Handling Guide.