Help with Java Formula

Hello everybody, 

I'm currently developing a Dash based on the amazing Job Andreas Dahl has done. 

I'm facing a problem with the bite point setting screen where the Java Formula he's written is not working for me. 

Basically what it has to do is to read and make the last adjustable value  change (it's a decimal number) on a scale from 1 to 10 when the setting is triggered. 

Here's the formula:

var bite = $prop('DahlDesign.DDCbitePoint');

if ($prop('DahlDesign.SW1Enabled'))
{
    bite = $prop('DahlDesign.SW1bitePoint');
}

var trunc = parseInt(bite, 10);

var result = Math.round(10*(bite-trunc));

return "." + String(result);

What Simhub returns is always "Expression error:Line 33': Unexpected token *" but the formula seems to be working for Mr. Dahl and everybody else is using it. 

Any suggestion? Thanks in advance!