Be careful with vectors in general. They are always removed after a while:
Vector(x,y,z):
The vector pointers have a limited lifetime because there are only 64 different vectors available for this function, that are used cyclic.So use this only for passing temporary vectors to functions, but not for permanent vector pointers.
I have no idea how true this is. Maybe JCL has invented linked lists in the meantime, and forgot to update the manual.
