Hello,
Could you say why you want to write values to the container in this way?
Maybe it would be easier to have a step in the workflow call a method which passes in these values via the binding.
I have never found a use for SAP_WAPI_WRITE_CONTAINER.
In any case, try SWC_SET_TABLE but I believe it will only work if all of the fields are character types.
regards
Rick Bakker