Doing FTP using a Dynamic Port

Question

Hi,
I am having an odx with a Receive Shape, expression and Send shape.
The send shape is connected to a dynamic port:
There is a message var called ShowPartMessage.
There is no transformation. This message needs to be received and sent via FTP.
In the expression shape i have something like:
SendPortName(Microsoft.XLANGs.BaseTypes.TransportType) = "FTP";
SendPortName(Microsoft.XLANGs.BaseTypes.Address)= @"FTP://99.99.x.xxx/fold1/ftp/%MessageID%.xml";
ShowPartMessage(FTP.UserName)= "user";
ShowPartMessage(FTP.Password)= "pass";
I get an error message for the last 2 lines saying "message construction must be done
in a construct block".
Do i need a construct block just to assign the username and password?
i based my soln  on the following link here:
http://msdn.microsoft.com/en-us/library/aa560663.aspx
Please assist
regards,

Answer 1

The difference between static and dynamic ports is only the Message Assignment shape, which is mandatory in a dynamic port to specify the FTP port details.
Your message assignment shape should have the code like below:
Msg_DynamicSend(FTP.CommandLogFileName) = "D:\\BiztalkLogs\\FTPLog\\DynamicFTPLog.txt";
Msg_DynamicSend(FTP.UserName) = "FTPUSER";
Msg_DynamicSend(FTP.Password) = "Pass1234";
Msg_DynamicSend(FTP.SpoolingFolder) = "/IN/";
Msg_DynamicSend(FTP.RepresentationType) = "ASCII";
DynSendPort(Microsoft.XLANGs.BaseTypes.Address)= "ftp://inhydeshrilata";
DynSendPort(Microsoft.XLANGs.BaseTypes.TransportType) = "FTP";
Msg_DynamicSend is the message name set for send port and DynSendPort
is the port name for dynamic send port.
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Regards,
Rachit