Nested Attributes slash "/.." field name problem - GetItem - ProjectionExpression

[emindeniz99]

Hello,

{  
"name": "Emin",
 "myMap": {
    "/hello": "hi",
    "asd": "123"
  }
}

I want to specify ProjectionExpression to get only "/hello": "hi"

But to specify nested attributes, "."(dot) usage is necessary.
ProjectionExpression: "myMap./hello",
It is not work.
I tried to use escape character "" in front of "/", it gives error.

error:
ProjectionExpression: Syntax error; token: "\", near: ".\/"

code:

const params = {
		TableName: config.aws_table_name,
		Key: {
			name: "Emin",
		},
		ProjectionExpression: "redirects./hello",
	}

	return await docClient.get(params).promise()```