getrange(n,d) > if(!isnum(n)||!isnum(d))return > var{h;l} > if(n==d)return 0 > if(n>d){h=n;l=d} > if(d>n){h=d;l=n} > return h-l

When I look at that, it seems like something's wrong...but I can't tell what.

Uh are you tring to get the difference between the two numbers or something :P? If that is the case just do this

return abs(n-d)