minimum variance portfolio with fixed return

I want to show a minimum variance portfolio with a fixed return of 3.5%

I got the code for the minimum variance portfolio but I don't know where to put the additional condition.

Option = optimset('Algorithm','interior-point-convex');

[w] = quadprog(KovarianzMatrix,V0,[],[],V1,Budgetrestriktion,lb,ub,[],Option);