rotate between two certain degrees

[ela1995 0]

how do I rotate the box in scene random between -45 and 45 degree? I mean it's either -45 or 45, no any random degree in between.

certain rotate degree.hip

[Skybar 355]

if(random(@ptnum) > 0.5){
    f@randrot = 45;
    }
    else{
        f@randrot = -45;
        }

Or use Attribute Randomize SOP: