Hello, I'm trying to insert number into endpoint in json. (I'm using typescript, wiremock captain) But the regex is not working. Is there a solution? Please help me.

const prefix = '/api/user';

export const postItem: MockingType = {
  request: {
    method: 'POST',
    endpoint: `${prefix}/([0-9]*)/item`,
  },

the api I want to connect is /api/user/1/item, 
I've tried (d+), \d\, [0-9]* etc in that point between ${prefix} and item.