how to get the value of both identical attributes using DSL?

[jianzzz]

Code：

var r1, r2 = prompt_file.Request(), prompt_file.Request()
err := r.Ask()
if err != nil {
    return err
}

AST:

      var_declaration [19, 1] - [19, 58]
        var_spec [19, 5] - [19, 58]
          name: identifier [19, 5] - [19, 7]
          name: identifier [19, 9] - [19, 11]
          value: expression_list [19, 14] - [19, 58]

DSL：

(var_declaration (
    var_spec
       	name: ((identifier)) @var_name
        value: (expression_list(
        	call_expression
            	function: (selector_expression
                	operand: (identifier) @identifier
                )))))

var_spec has two identical attributes: name: [identifier].
How do I get the value of both?
I can only get the value of the first one.