Need help with a small piece of code

hi there,

anyone can help code the following:

given the doubles high, low as swing high and swing low of a trend, and the integer highbar and lowbar as positions of trend high and low, i need to calculate the retracement point of this trend on the lower time frame and check if price penetrated the first Fibonacci target at 1.61.

double high, low, retrace
int highbar, lowbar, retracebar, i

i current bar where i need to check if price penetrated the fibo target

thanks