Replacing a Column vector value

I have a matrix x=[1 2 3; 4 5 6; 7 8 9]. i wanted to replace 3rd column of matrix by a scalor value of 10. new matrix should look like x=[1 2 10; 4 5 10; 7 8 10]

Answer 1

[KSSV]

x(:,3) = 10

[Raghavendra Reddy P]

sir thank you.. Actually its a small step but i got confused :)