Subs symbolic by uncertain real

Hello,

I have a big matrices with high number of elements in a symbolic way and I want to subs symbolic expression with ureal object but it throws an error. For example :

syms s

a = ureal('A',5,'Range',[2 7]);

expression = 3*s+s^2;

expression_uncertain = subs(expression,s,a); %throws an error

Do you have any tips ?

Thank you,