Note: This function is deprecated. You can independently set the dependency of the bulk temperature or film coefficient to a different csys reference for an external file by setting its ProMechVariation type to PRO_MECH_VARIATION_EXTERNAL_FIELD. See ProMechconvectiondataBulktempSet() ProMechconvectiondataFilmcoefficientSet() ProMechvariationExternalfielddataSet() ProMechexternalfielddataCsysSet()

This function sets the coordinate system for both the bulk temperature and film coefficient in this convection data.