ILOG CPLEX 11.0 Getting Started > Tutorials > Interactive Optimizer Tutorial > Changing a Problem > Removing Bounds

To remove a bound, set it to + or -. Interactively, use the identifiers inf and -inf instead of the symbols. To change the upper bound of x2 back to +, use the one line command:

change bounds x2 u inf 

You receive the message:

New bounds on variable 'x2': The indicated variable is >= 0.

The bound is now the same as it was when the problem was originally entered.