Golang: Multiple structs marshall issue: json format

For the following code, I get the error:

type A struct{
	B_j []B `json:"A"` 
}
type B struct
{
	X string
	Y string

}

func main() {
	xmlFile, _ := os.Open("test.xml")

	b, _ := ioutil.ReadAll(xmlFile)

	var t root
	err2 := xml.Unmarshal(b, &rpc)
	if err2 != nil {
		fmt.Printf("error: %v", err2)
		return
	}

	for _, name := range t.name{
  		t := A{B_j : []B{X : name.text, Y: name.type }} // line:#25
		
		s, _ := json.MarshalIndent(t,"", " ")
        
    os.Stdout.Write(s)
		}
}

# command-line-arguments
./int2.go:25: undefined: X
./int2.go:25: cannot use name.Text (type string) as type B in array or slice literal
./int2.go:25: undefined: Y
./int2.go:25: cannot use name.type (type string) as type B in array or slice literal

In my output, I am trying to achieve something like this:

{A: {{X:1 ,Y: 2}, {X:2 ,Y: 2}, {X: 2,Y: 2}}}

Struct calling another struct to get the pattern above.

It seems you have problem at this line-

t := A{B_j: []B{X: name.text, Y: name.type }}

You're not creating a slice properly. Try following-

t := A{B_j: []B{{X: name.text, Y: name.type}}}

Let's do it better way-

var bj []B
for _, name := range t.name{
  bj = append(bj, B{X: name.text,Y: name.type})
}

t := A{B_j: bj}
s, _ := json.MarshalIndent(t,"", " ")      
os.Stdout.Write(s)

Sample program with static values https://play.golang.org/p/a2ZDV8lgWP

Note: type is language keyword, do not use it as variable name.