Argentina economists slammed a proposal to dollarize the nation that’s backed by presidential candidate Javier Milei, calling the idea a mirage and warning it would spawn a new set of challenges.

The country lacks the needed amount of dollars, and efforts to build up supply would entail “absurd” increases in debt, further compromising public finances, dozens of prominent economists wrote in a letter released on Sunday. Adopting the dollar doesn’t make sense given the complexities of Argentina’s economy and the fact that it’s little correlated with the US, they wrote.

Read more: What Dollarization Offers Countries Like Argentina: QuickTake

While the pledge of a stable currency generates hope, “international experience and the situation of our own economy indicate the proposal in question is far from being a panacea and that, on the contrary, it could generate multiple difficulties for our immediate and future performance,” they wrote.

Milei, a radical libertarian who shot to the forefront of Argentina’s presidential race after a surprise primary victory last month, has proposed replacing the peso with the US dollar in the South American economy as a way to tame one of the world’s fastest inflation rates. That proposal and others — including a plan to shutter the central bank— are now sparking significant push-back.

Former Mexican central bank Governor Guillermo Ortiz, onetime Chilean Finance Minister Andres Velasco and Arminio Fraga, who led Brazil’s monetary authority between 1999 and 2003, all criticized the dollarization proposal in a press call last week. Ortiz said it would fail to solve “structural problems” while Fraga said it “sounds like a magic solution.”

Read more: Argentina’s Dollarization Is a ‘Bad Idea’, Top Economists Say

In the letter, the Argentine economists wrote the nation is facing challenges including galloping inflation, instability and surging poverty.

“Let us not allow — out of nearsightedness and desperation — that the difficult situation in which we find ourselves encourages us to taking a false shortcut that only leads to new and more dramatic frustration,” they wrote.