No problem, you can do this by setting a value for the CustomerInfoHeader Property like this:

[Visual Basic]

'Instantiate the service variable
Dim commonService As New CommonServiceSoap()

' Set the CustomLogEntry field to differentiate from other
' logs in the reporting logs
Dim myCustomerInfoHeader As New CustomerInfoHeader()
myCustomerInfoHeader.CustomLogEntry = 30
commonService.CustomerInfoHeaderValue = myCustomerInfoHeader


[C#]

//Instantiate the service variable
CommonServiceSoap commonService = new CommonServiceSoap();

// Set the CustomLogEntry field to differentiate from other
// logs in the reporting logs
CustomerInfoHeader myCustomerInfoHeader = new CustomerInfoHeader();
myCustomerInfoHeader.CustomLogEntry = 30;
commonService.CustomerInfoHeaderValue = myCustomerInfoHeader;


Mark - MSFT