Sum structures with an array 1x1 each one

Hi, i amtrying to sum an structure but manually wil be considerable large

Q.O20 = 1

Q.B3 = 2

Q0h = Q.B3 + Q.O20;

It is quite easy with few structures but i have a problem, as this structure depending on the experiment can be up to 35 variables

There is anyway to sum all Q values from the structure? I have tried this but won't get the values

Q0h = sum(Q.Variables)

Q0h = sum(Q,'all')

Answer 1

[KSSV]

Q.O20 = 1;
Q.B3 = 2 ;
Q0h = Q.B3 + Q.O20

Q0h = 3

s = sum(cell2mat(struct2cell(Q)))

s = 3

[Kami]

Thanks a lot, it works like charm