[yt-users] Projections and field parameters

Hi all, Does anybody know how exactly projections work with field parameters? Suppose I have a field called "ProjectedVelocity" that takes a field parameter "axis" that chooses between the velocity components depending on the axis of projection. The code goes like this: proj = pf.h.proj(axis, "ProjectedVelocity", weight_field="DensitySquared") proj.set_field_parameter("axis", axis) But it looks like this field is being projected before the field parameter is set. Will I get the correct behavior when I do something later with the proj object, like generate an FRB? Best, John Z