Slider process interaction with layers

Hi,

I've created slider process interaction with layers like in the exemple https://community.articulate.com/download/sample-slider-interaction-for-storyline-2

I have basic layer with instruction "Click and drag the slider to learn about each step." and I have 5 different layers for 5 different steps.

I want to show each layer(step) when learner moves the slider.

I've set up the slider options like this:
Variable: slider 1
Update: When slider is dragged
Start:0
End: 5
Initiale:0
Step: 1

I've set up 5 triggers like in Nicole's exemple like this:
Show the layer 1
When Slider 1 modifications
If slider 1 is equal to 1,00

...and so on for each or 5 layers

The problem is that I don't have in the output the slider moving on each of 5 steps. It moves only to the middle and that's all. I suppose I didn't set up right the slider options. Could someone help me to unblock the situation? I can upload my source file if needed.

Thanks so much for advices!