Q:

Get loop controller's current value

I've made a Loop Controller to execute multiple time a sequence of instructions. But inside those sequences I need to get the current loop that I'am in so in my HTTP request I can make something like : path : website.com/${currentLoopValue}.
Is it possible to do that?

A:

The easiest way would be using Counter test element. 

Add Counter as a child of your Loop Controller
Configure it as follows:

You will be able to refer current loop iteration value as ${counter} where required

See How to Use a Counter in a JMeter Test for more detailed information on generating incrementing values via aforementioned Counter test element and/or __counter() function 

