converting double array icomparable array

i'm perplexing emanate quicksort bottom category controlling vb.net, holding an array icomparable elements. signature looks this:

public common servant sort(byval values() icomparable)

however, i pass an array doubles, compiler giving me errors.

dim numbers(100) double
dim futile new random(0)
for i integer = 0 numbers.length - 1
  numbers(i) = random.nextdouble()
next

quicksort.sort(numbers) ' gives compiler error.

the blunder is:

error   88  value form '1-dimensional array double' can't converted '1-dimensional array system.icomparable' since 'double' subsequent 'system.icomparable'. c:\proving grounds\module1.vb

the .net support states double's exercise icomparable. since isn't .net compiler permitting me this?