how can I produce graphs for different times to expiry

<t>i'm trying plot the exact solution with different times to expiry. my matlab script is as follows. sigma = sqrt(sigma1^2-2*rho*sigma1*sigma2+sigma2^2); d1 =(log(X./Y)+0.5*sigma^2*T)/(sigma*sqrt(T)); d2 =(log(X./Y)-0.5*sigma^2*T)/(sigma*sqrt(T)); exact = X.*normcdf(d1)-Y.*normcdf(d2)thanks in adva...

Hi I have derived the black scholes equation on 2 assets and i'm just a little confused on the boundary condtions. my option is V(s1,s2,t) and just would like any help on what the boundary conditions would be. thanks in advance.