I'm trying to add coordinates through a variable, why doesn't it work?

Question

JavaScript

Hello everyone, who knows why it doesn't work if you put a variable in the Yandex map coordinates?

x = '[59.91815363876071,30.30557799999997]'
center: x

but if you write like this, it works
center: [59.91815363876071,30.30557799999997]

Answer 1

In the working version, you have an array, and in yours, a string.
var x = [59.91815363876071,30.30557799999997];