Sube y baja (aka Up and Down) is a 1959 Mexican comedy film directed by Miguel M. Delgado and starring Cantinflas, Teresa Velázquez, Domingo Soler, Carlos Agostí and Alejandro Ciangherotti.
When Cantinflas starts working in the store, his lack of business savvy and destructive nature cause numerous incidents of distrust among prospective customers.
After recognizing Lucy who unknowingly had met Cantinflas in the elevator, he decides to take his chances after and confessing their mutual attraction he tells her about his plan to meet Maciel.
The real Jorge Maciel arrives at the hotel and finds out about Cantinflas' usurpation by reading an announcement of "his" competition in a boat race.
The next morning, Lucy learns that the fake Maciel left the hotel at dawn without telling her anything, and her friend who discovered who he is offers to take her to meet up with "Jorge".