vector variables not passed through commandChip.FlightProgram.var

When reading a vector variable outside of the flight program with funk/input controllers (eg CommandChip.FlightProgram.velocityVec), it only returns the length of the varaible as a double, not the vector. Attempting to add v: or use vector operations results in errors.

Launch craft and look at errors in log. Screenshot 2 shows various format attempts, none of which worked.