As Rik mentioned, you need to use plot3 when you have three variables 'x', 'y' and 'z'. I presume that you have many sets of three values like 'Ax','Ay','Az' as one set, 'Bx','By','Bz' as the second set and so on for 'n' sets.
Let us say the size of each is 1x10. Now you wish to plot each of these 'n' sets with the corresponding 3 values each time in the same plot. You can do that as follows:
This will give you the plots of all 'n' sets (here, n=26 for example) in the same graph.
Hope this helps.