Flipping a line or curve label

[DWCouch123YGV8K]

I am creating line and curve label in LISP.  I then need to flip  some of them.  I can't seem to get the "fliplabel" command to work.

(setq SelObj (nentsel "\nSelect Line or Arc to Label: "))

I've tried each of these option.
Option 1  (setq sellbl (cdr (assoc 330 (entget (car selOBJ)))))
Option 2  (setq sellbl (entget (car selOBJ)))
(command "labelflip" sellbl)

I previously used setting the label property 'flipped to -1 but I can't seem to get that working.

(setq lastlabel (vlax-ename->vla-object (entlast)))

(vlax-put-property lastlabel 'flipped -1)

Working in C3D 2021

It's been almost 10 years since I have been doing this kind of thing (LISP programming).  I have forgotten a lot.

[Jeff_M · Accepted solution]

Try this:

(vlax-put lastlabel 'flipped -1)

[DWCouch123YGV8K]

I was sure I had tried that, but apparently not. It worked just fine.
Thank you Jeff.