Convert to string before adding as metadata. This is to make it possible to write to file easily.
Convert to string before adding as metadata. This is to make it possible to write to file easily.

opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core