1. Enable the data traffic function by checking the checkbox of "Data Traffic" in the Test Configuration tab;
2. Add "FTP Active Data Transfer Mainflow" to the Data Message Flows windows in the L3-7 tab;
3. Double click the DMF flow->Select Sequencing tab->click Show Subflows button;
4. Double click "FTP Active Data Transfer Subflow"->Select Sequencing tab.
5. in the #2 command, change the first Message from "None" to "Response", Change the second Message from "Response" to "None".
6. Save the FTP uploading DMF files and have a try.