Iterating through a list

Thank you, so this exactly what I am trying to do, I am trying to put these values in a query field

query_result = %{
"blog" => %{
"posts" => [%{
"val" => here comes the elements of x
}]

My output should look something like this

"blog" => %{
"posts" => [%{"val" => "23gh"}, {"val" => "56kh"}, {"val" => "97mh"}] }