Enum instead of numbers in arrays

I want to use ENUM as a way to make reading easier as I pass alot of parameters using arrays as argument for my function.

//inside the class enum eLimits { EntropyMinimum = 0, EntropyMaximum, StabilityMinimum, StabilityMaximum, ChewedFilesFrequency };

     private struct virusLimits
     {
         private double        entropyMin;
         private double         entropyMax;
         private double        stabilityMin;
         private double        stabilityMax;
         private double        chewedFilesFrequeny;
     
         public virusLimits ( double [] args) {
  //removed lots of things to make it shorter
                 entropyMin = args[eLimits.EntropyMinimum];
                 entropyMax = args[eLimits.EntropyMaximum];
                 stabilityMin = args[eLimits.StabilityMinimum];
                 stabilityMax = args[eLimits.StabilityMaximum];
                 chewedFilesFrequeny = args[eLimits.ChewedFrequency];
             }
         }
 
 //continues the code

The result I always get is "error CS0266: Cannot implicitly convert type PetBehaviourScript.vStatus' to int'. An explicit conversion exists (are you missing a cast?)" for each and every time I try to use enum as a number for the array... Is there a way to do it?