Hey I've found it.

If you follow the odometer tutorial from Aharon Rabinowitz

http://library.creativecow.net/articles/rabinowitz_aharon/Odometer_2/video-...
there's the expression you put in the Offset effect (shift to center property)

Depending of the digit, you have to modify the start_value and the End_value. Hope someone will use it.

`variableSlider =thisComp.layer("master compteur").effect("Slider Control")("Slider");// this line depends of your layer's name of course;`

digit1 = Math.floor(variableSlider%10);

digit2 = Math.floor(variableSlider/10);

digit3 = Math.floor(variableSlider/100);

digit4 = Math.floor(variableSlider/1000);

digit5 = Math.floor(variableSlider/10000);

digit6 = Math.floor(variableSlider/100000);

digit7 = Math.floor(variableSlider/1000000);

start_value=digit2;

end_value=digit2+1;

space_between_numbers=192

column_height=1920

offset=thisComp.layer("master compteur").effect("Slider Control")("Slider")%10;

y=value[1];

x=linear(offset,9,10,start_value,end_value);

[x*space_between_numbers%column_height,y]