We are on SQL Server 2014 and unable to use parameters of type UNIQUEIDENTIFIER at the stored procedure level because SSIS does not supply GUIDs as an option for parameters or variables (which is curious, because at the data flow level they are supported). We have attempted to use an 'Object' type, but receive errors that the parameter was not supplied. We've also tried string variables with the intent of casting them later in the process, to no avail.
Is there a recommended method for accommodating this problem with SSIS?