Hi All, I am setting prob line on 2.5D for 4D spanwise, for using 32 modes or 64 modes it is ok, but when i am using 48 modes it changes the points location like this: *Reseting History point from z = 2.83333 to z = 2.75* *Reseting History point from z = 2.91667 to z = 2.91667* *Reseting History point from z = 3.08333 to z = 3* *Reseting History point from z = 3.16667 to z = 3.16667* *Reseting History point from z = 3.33333 to z = 3.25* *Reseting History point from z = 3.41667 to z = 3.41667* *Reseting History point from z = 3.58333 to z = 3.5* *Reseting History point from z = 3.66667 to z = 3.66667* *Reseting History point from z = 3.83333 to z = 3.75* *Reseting History point from z = 3.91667 to z = 3.91667* *any suggestions?* *Regards,* *Reda*