Laravel validation between. Why is it missing?

Question

Laravel

Sending via Ajax:

var point = 'test';
var ecology = '6'; 
data: {point:point, ecology:ecology}

And in the controller, when the ecology field is validated, it is checked!

'ecology' => 'required|integer|digits_between:1,5',

If instead of a number I put another character, then the validation works. But there is no between from 1 to 5... Why?
Tried and just between and digits_between... Tried and var ecology = '6'; and without quotes var ecology = 6;
Everything passes smoothly ... Why?

Answer 1

digits_between checks the number of digits in a number, not the size of the number. The 6 is one digit, which corresponds to 1 to 5.
between should work.