Dear Houdini

node = hou.pwd()
geo = node.geometry()

geo.createPacked("PackedDisk")

int ptnum = addpoint(geoself(), {0,0,0});
int primnum = addprim(geoself(), "PackedDisk", ptnum);

//Display as bounding box
setprimintrinsic(geoself(), "viewportlod", @primnum, "box", "set");

int f = @Frame-1;
string ver = sprintf("%04d", f);
setprimintrinsic(geoself(), "unexpandedfilename", @primnum, "/hou/foo/obj_" + ver +".bgeo.sc", "set");