[AS3] if statement not finding greater than zero

Why would

if(vol > 0){
trace(“worked”);
}

NOT work if the value is a decimal value between 0 and 1?
The trace only works sometimes. I didn’t note though at what value it worked…STUPID ME…forgot and plus, it was 2AM.

I am reading in an array …byteArray, and then passing readFloat to vol.

Thanks