const url = postman.getEnvironmentVariable("host.api")+'/securityv2/v2/security/token/create';
const user = postman.getEnvironmentVariable("cognito.user");
const pass = postman.getEnvironmentVariable("cognito.pass");
const client = postman.getEnvironmentVariable("client");

const requestConfig = {
  url: url,
  method: 'POST',
  header: {
      "Content-Type": "application/x-www-form-urlencoded"
  },
  body: {
    mode: 'raw',
    raw: 'username='+user+'&password='+pass+'&grant_type=password'+'&client_id='+client
  }
};

pm.sendRequest(requestConfig, function (err, res) {
  console.log(err ? err : res.json());
  var data = res.json();

  postman.setEnvironmentVariable("AuthToken", data.access_token);
});