Altering the variable from PixelSearch?

Hi,

For example, my PixelSearch gave 2 variables
$abc[0] = 100
$abc[1] = 10

Are you able to alter it's value entered in the array?

I tried to alter by

$abc = PixelSearch(438, 426, 889, 782, 0x0000FF, 5, 2)
If Not @error Then
  $abc[0] = $abc[0] + 50 ; to get to 150
  $abc[1] = $abc[1] -5 ; to get to 5
Endif

But it doesnt work, error appears