From the book Holes by Louis Sachar Explain the curse from the one-legged gypsy.?

In the book "Holes" by Louis Sachar, the curse from the one-legged gypsy is placed on Stanley Yelnats' family after Elya Yelnats breaks a promise to carry the gypsy up a mountain. The curse brings bad luck to each successive generation of the Yelnats family, leading to Stanley being wrongfully convicted and sent to Camp Green Lake. The curse is eventually broken when Stanley carries Zero up a mountain to safety.