How to use the, "set Items" function with a drop down box, and an Array?

Good evening, I am attempting to use the "Set Items" function to add hundreds of words into a drop down box, using a for loop, and an Array.

I can use the same method of a loop to use the Array however I want, except for when it comes to adding the Array's contents into a drop down box.

Here is my code:

/*Here we will import, and read from a specific text file, 
  and then assign the text file into an array, seperated by '\n' */
this.importDataObject("MED & DIAGNOSIS & ICD-10.txt", "C:/Users/dell/Documents/MED & DIAGNOSIS & ICD-10.txt");
var oFile = this.getDataObjectContents("MED & DIAGNOSIS & ICD-10.txt");
var cFile = util.stringFromStream(oFile, "utf-8");
var fileArray = cFile.split('\n');
/* Here, we will loop through the array equal to its length, 
   attempting to add every other value in the array into a drop down box.  
   This portion of the code does not work, however. 
   "console.println(MedAnalysis);" works just fine in the loop, for instance. */
var Drop = this.getField("Drop Test");
var index, i;
for (i = 0; i < fileArray.length; i++) { 
Cartographer = fileArray.split('\t');
MedAnalysis = Cartographer[0]
Drop.setItems([MedAnalysis]);
}

Any help would be wonderful, thank you!