Force one decimal place

n = effect("Slider Control")("Slider").value;


// add one zeros, and make it an unsigned string -- we'll add the negative back later if it's supposed to be negative
nScaled = Math.abs(Math.round(n * 10));
s = "" +  nScaled.toString();

// pad low values with leading zeros to ensure at least 2 digits after we move the decimal point
while (s.length < 2)  s = "0" + s;

// if it was negative, add the - sign back
if (n<0) s = "-" + s;

// insert the decimal place before the last decimal place
s = s.substr(0,s.length-1) + "." + s.substr(s.length-1,s.length)