Test Cases/Jump-to text box FAILED because (of) Variable 'ENTER' is not defined for test case

I cant get the key variables to work. Here is what I have:

import static com.kms.katalon.core.checkpoint.CheckpointFactory.findCheckpoint

import static com.kms.katalon.core.testcase.TestCaseFactory.findTestCase

import static com.kms.katalon.core.testdata.TestDataFactory.findTestData

import static com.kms.katalon.core.testobject.ObjectRepository.findTestObject

import com.kms.katalon.core.checkpoint.Checkpoint as Checkpoint

import com.kms.katalon.core.checkpoint.CheckpointFactory as CheckpointFactory

import com.kms.katalon.core.mobile.keyword.MobileBuiltInKeywords as MobileBuiltInKeywords

import com.kms.katalon.core.mobile.keyword.MobileBuiltInKeywords as Mobile

import com.kms.katalon.core.model.FailureHandling as FailureHandling

import com.kms.katalon.core.testcase.TestCase as TestCase

import com.kms.katalon.core.testcase.TestCaseFactory as TestCaseFactory

import com.kms.katalon.core.testdata.TestData as TestData

import com.kms.katalon.core.testdata.TestDataFactory as TestDataFactory

import com.kms.katalon.core.testobject.ObjectRepository as ObjectRepository

import com.kms.katalon.core.testobject.TestObject as TestObject

import com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords as WSBuiltInKeywords

import com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords as WS

import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUiBuiltInKeywords

import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI

import com.kms.katalon.core.webui.keyword.builtin.SendKeysKeyword as Keys

import internal.GlobalVariable as GlobalVariable

WebUI.callTestCase(findTestCase(‘Upload Movement Plan’), [:], FailureHandling.STOP_ON_FAILURE)

WebUI.click(findTestObject(‘Page_Movement Planner/Jump to text field’))

WebUI.click(findTestObject(‘Page_Movement Planner/up-autocomplete-results-list_h’))

WebUI.setText(findTestObject(‘Page_Movement Planner/Jump to text field’), ‘W410’)

WebUI.sendKeys(findTestObject(‘Page_Movement Planner/Jump to text field’), Keys.chord(Keys.ENTER))

WebUI.delay(5)

WebUI.verifyElementNotVisible(findTestObject(‘Page_Movement Planner/div_Invalid station’))

import org.openqa.selenium.Keys as Keys
WebUI.sendKeys(findTestObject('Input'), Keys.chord('Text String',Keys.ENTER,Keys.TAB))