Connecting ClassicLader variables with HAL.

Hello,
plese could you be so kind and help me connect pyvcp scale value which is i think integer number to ClassicLader %IW0 input variable to use as comparison later in classicladder. 

pyvcp code:<scale>
<font>("Helvetica",16)</font>
<width>"25"</width>
<halpin>"my-hscale"</halpin>
<resolution>1</resolution>
<orient>HORIZONTAL</orient>
<initval>1</initval>
<min_>0</min_>
<max_>999</max_>
<param_pin>1</param_pin>
</scale>
in hal ini file:

net input-password  pyvcp.my-hscale classicladder.0.in-('%IW0')???

Thank you   
 

It's ok thanks.
In meantime i figure it out that information is clearly visible in Halshow window Pins -> classicladder -> 0