Is it possible to change map value by key?

support
10

Of course Golang permits maps updating, here is example from the net

package main
 
import "fmt"
 
func main() {
	var employee = map[string]int{"Mark": 10, "Sandy": 20}
	fmt.Println(employee) // Initial Map
 
	employee["Mark"] = 50 // Edit item
	fmt.Println(employee)
}

So I’m far away of comparing languages, just looking for instrumentary that allows me to reach the goal - process some custom structured data. My previous topic here referring to the same goal.