On Mon, May 23, 2022 at 09:46:09AM -0700, Greg Minshall wrote: > Ypo, > > > (defun salto () > > (interactive) > > (if posicion 1 You are comparing the value of posicion to 1? Then it should probably be "(if (= posicion 1) ...)" or "(if (equal posicion 1) ...)" or something like that. Cheers -- t