Help getting info from API

I don’t know why I can’t get a number from this json (in the link)

{“ask”:771480,“totalAsk”:776494.62,“bid”:770750.6,“totalBid”:765740.72,“time”:1704263685}

https://criptoya.com/api/bitsoalpha/btc/mxn

The code:
$mu(round, wg(“https://criptoya.com/api/bitsoalpha/btc/mxn/1”, json,.bid))$

I want to get the “bid” number but idk what I’m doing wrong