entmod

(entmod list)

Changes the entity of code -1 with the values of the list (the others stay the same). If the layer does not exist, it is created. Returns the list, or nil if it cannot.

(setq e (entget (entlast)))
(entmod (subst '(62 . 1) (assoc 62 e) e))

Differences with AutoCAD

Only for LINE, CIRCLE, ARC, LWPOLYLINE, TEXT, MTEXT, POINT, INSERT and ATTRIB.