loop and mixing for tables

If Variables A, B, C each varies from 0 to 100, and their sum equal to 100.

I tried the following:

for A, B, C = 0:10:100, A+B+C=100,

z=A*T1.+B*T2.+C*T3.

end

%%%T1, T2, T3 are tables, containing similar structures (same columns/rows, similar type of data)%%%

It seems that there is some problem.