Ok, I'm now using maple 11, previously i was using maple 8. I'm trying to define a coordinate array, in this case i do this by setting the array, Coords:=({x,y,z}); however maple 11 now seems to change the ordering of the array. giving as output: Coords := {y, z, x} How do I make it stay as x,y,z????? Why would it do this??