I'm having trouble manipulating fields (other than density) in my volume sop. I'm trying to use parameter vops to import/export values, but I seem to be doing something wrong. In the attached file, I'm trying to scale my vel.x field by a constant, but it seems to have not effect. I assume that I've done something wrong with my parameter vops, but I can't seem to figure out what it is. If anyone has any input I'd appreciate it. thanks doc volume_scale_velocity.hip