Setting csv data sheet file path in grunt

i am trying to figure out how to set the csv data sheet file name in the Grunt to setup jenkins build.

this is what i have, i tried data, dataiteration but its not working.

grunt.registerTask(‘apitests’, function(TestSuite, Environment, DataSheet) {
var newman = require(‘newman’);
var done = this.async();

newman.run({
collection: require(“./tests/” + TestSuite + “.postman_collection.json”),
environment: require(“./data/” + Environment + “.postman_environment.json”),
dataiteration: require(“./data/” + DataSheet + “.csv”),