can i use a string variable like this

I'm trying to do a command prompt thing ive got this so far i need to use the string variable as a if statement also i will be using move than one string variable

code part j/s

var yPosition : int; //positions for the text box in the bottom corna var xPosition : int; //positions for the text box in the bottom corna var ytransform : int; //size for the text box in the bottom
var xtransform : int; //size for the text box in the bottom var WhatTheBoxSays : String; // the input on the text box var largerTextboxboolean : boolean = false; var yPosition2 : int; //positions for the text box in the bottom corna var xPosition2 : int; //positions for the text box in the bottom corna var ytransform2 : int; //size for the text box in the bottom var xtransform2 : int; //size for the text box in the bottom

     function OnGUI() {
          
          if(largerTextboxboolean)
          {
              GUIText((Rect(xPosition2,yPosition2, xtransform2 ,ytransform2 ),WhatTheBoxSays,25);)
          }
          
     
        WhatTheBoxSays =   GUI.TextField(Rect(xPosition,yPosition, xtransform ,ytransform ),WhatTheBoxSays,25);
     }
     
 function Update(){
     if(WhatTheBoxSays=Help) {
     largerTextboxboolean= true;
 }
 if(largerTextboxboolean && Input.GetKeyDown("c"))
 {
     largerTextboxboolean= false;
 }
 }