See also ZF-5810: View helper is creating incorrect parameters.

In the Callback function assigned to the slider's change event:

function zfjSliderUpdateagerange(e, ui) { $("#hidden_field").attr("value", $("#slider").slider("value", 0)); }

This resets the sldiers value to zero -- rather than getting it to pass to the hidden field as is intended.

What's needed is this:

function zfjSliderUpdateagerange(e, ui) { $("#hidden_field").attr("value", $("#slider").slider("value")); }

Slider.php r11941 line 81 -- eliminate the %d (but there's obviously some (s)printf action going on somewhere which might mean it will be missed...