Javascript TextAsset to Generic Dictionary

I have read around and it seems the best way to use a text file like a hashtable is with a generic dictionary. Of course, easier said than done. There are plenty of examples on parsing text files, but none on passing them into a dictionary that I have found.
I have cobbled together some code from the limited information/examples that exist on Javascript dictionaries. It doesn't work , but I'm not sure why. I can get the code to compile without errors, so I assume the syntax is OK(if conceptually incorrect/incomplete), but it fails to find the key/value pairs in the dictionary. Error message is

KeyNotFoundException: The given key was not present in the dictionary.

I suspect there might be two errors: one in how I understand splitting the text file into arrays, and another in how I understand adding/fetching key/value pairs in a dictionary.

I am a novice, so please excuse some of my ignorance. Any advice would be appreciated. Code is below:

Text file is just this:

 NUMA*One
 NUMB*Two
 NUMC*Three
 NUMD*4
 NUME*Five
 NUMF*Six
 NUMG*7
 NUMH*Eight

Code attached to GameObject is:

 #pragma strict
 import System.Collections.Generic;
 
 /* Load the text file */
 var textFile : TextAsset;
 /* Create an dictionary for the values in the file */
 var textInfo = new Dictionary.<String,String>();
 
 
 function Start () {
 
     /* split the text file up by newline characters */
     
     var textLines : String [] = textFile.text.Split("/n"[0]);
 
     /* loop through each line in the file */
  
     for ( var thisLine : String in textLines ) {
  
     /* split each line by asterisks into array of two variables*/
  
     var valueString : String [] = thisLine.Split("*"[0]);
  
     /* add the two variables in the array into the dictionary as a key and value*/
  
     textInfo.Add(valueString[0], valueString[1]);
     }
 }
 
 
 function Update () {
 
 }
 
 function OnGUI () {
     
     /* make a labelled box to show a string pulled from dictionary by key*/
     GUI.Box (Rect (10,10,80,80), textInfo["NUMB"]);
 }

Thanks!