Can I use the vector values as an expression in " If condition" ?

Can I use the vector values as an expression in " if "

% Distance as vector
D1 = [500 456 789 963 302 423 700 785];
[M, Indx] = find (D1 <500);

% after running the above code, let's say we will get 
Indx = [2 5 6]  
% Now Can use the values of index in if condition as expression
if Indx ==[2 5 6]
    X = 20;
else
    Z=50;
end

Answer 1

[David Hill]

if isequal(Indx,[2 5 6])

[omar th]

thank you so much