Invoking a service using BLOB data syntax

Hi All,

When invoking LC using BLOB the syntax is:

//Create a BLOB object
BLOB inDoc = new BLOB();
//Populate the BLOB objects remoteURL data member
inDoc.remoteURL = urlData;
//Invoke the EncryptDocument process
BLOB outDoc = encryptClient.invoke(inDoc);

How the syntax goes when my service has also an input string variable,
and how to handle the result if it also returns output string
variable?

Thanks in advance!