Error: Illegal Access (Out of Bounds) when I declared a global array

Hello everyone ,I need help here. here is the thing:

I tried to declare an array to store the Garmin Weather conditions in an array so I can use them easyly in my watchface .

I set them in strings

<string id="CONDITION_CLEAR" >Clear</string>
<string id="CONDITION_PARTLY_CLOUDY">Partly cloudy</string>
<string id="CONDITION_MOSTLY_CLOUDY">Mostly cloudy</string>
<string id="CONDITION_RAIN">Rain</string>
<string id="CONDITION_SNOW">Snow</string>
<string id="CONDITION_WINDY">Windy</string>

and then I declared a global const

import Toybox.System;

var CONDITIONS2 = [
      Rez.Strings.CONDITION_CLEAR,
      Rez.Strings.CONDITION_PARTLY_CLOUDY,
      Rez.Strings.CONDITION_MOSTLY_CLOUDY,
      Rez.Strings.CONDITION_RAIN,
      Rez.Strings.CONDITION_SNOW,
      Rez.Strings.CONDITION_WINDY,
      ...,
      ];

but use nothing nowhere .

when I run in sim,  it comes out error in debug console:

Error: Illegal Access (Out of Bounds)
Details: Could not access symbol 'Rez'
Stack: 
  - <init>() at E:\watchface1\MyProject\source\global.mc:3 0x10000e9d 
  - 
Native code0x80000000 

but the watchface works well.(maybe because I didn't  used it anywhere )

So I tried to see if the array works

for(var i = 0 ; i < $.CONDITIONS2.size();i++){
    System.println(WatchUi.loadResource($.CONDITIONS2[i]));
}

to my superise, it works fine.

so there is the question:

What caused the  ERROR?

I tried to make a brand new project, and added the string and the const, it works perfect without any ERROR appear.

So, I think maybe some of my code triggered the ERROR. but after a long time work, I still can't figure out the problem.

plz help me .