Can many motors can you use and pneumatics our robot needs 10 motors and 4 pistins is this ok

For HS, up to 12 motors or 10 motors with pneumatics (max 2 cylinders, but no restriction on number of pistons).

10 motors and 4 pistons is fine.

12 motors or you can do 10 motors with 2 cylinders, I don’t know about the pistons.

There’s no limit to the number of pistons you can use. Karthik answered this question last year: