Hi, I stll have a problem with the datastreams. I hope someone can help me. I need a packet with custom data .for ex.SOAP data in the payload. I have captured a soap packet and the total framesize is 1134 with actual tcp payload 1079 .I changed the stream file in textpad mode to include this data but only 1058 bytes are correctly shown in the workbench datastream window ,the rest 21 bytes are again a repeat from the start. I again changed the 21 bytes manually in the workbench datastream window.The project acknowledges these changes and runs properly but the changes in the stream do not get saved and the next time i start the project ,the stream is again loaded with the wrong 21 bytes. The content of the payload is very important for my project. Thanks, Shweta