Solve: "bad guess(es)" error...

[salvomic]

hi,
why this code

Code:


EXPORT provasol()
BEGIN
local yield, coupon, ann, years, price;
coupon:=6.75;
ann:=2;
years:=14;
price:=122.125;
yield := Solve.SOLVE((coupon/ann)*( (1-1/(1+(X/ann))^(ann*years)) / (X/ann) ) + 100/(1+(X/ann))^(ann*years) = price, X);
RETURN yield;
END;

gives error "Bad Guesses"?
If I try with the values in Home I get the correct answer: 0.0459035...

Code:


Solve.SOLVE((6.75/2)*( (1-1/(1+(X/2))^(2*14)) / (X/2) ) + 100/(1+(X/2))^(2*14) = 122.125, X);

Thank you
Salvo