for loop in simulaink as matlab function

Is there any way to use this code as a matlab function in simulink?

P=zeros(0,n+1);

P(1) = P_in;

CR = (P_out/P_in)^(1/(n));

for i = 2:n

P(i) = CR*P(i-1);

P(i+1) = CR*P(i);

end