Multi-part POST parameters
POST requests with a multipart/form-data -type content have modifiable parameters and use a specific interface.
Each part is described by a name attribute and a value. It also features an optional specific content type, charset and transfer encoding. See RFC1867: http://www.ietf.org/rfc/rfc1867.txt. Each field may be replaced by a variable. The value may be a string or a file input.
Fields specific to the file part
The Filename field describes the file name within the part. The part content data is described by the Source File field. The file may be identified using a set path or one related to the project. The files are automatically copied to all the Load Generators when the test is started.