When you have defined, for example, a
which means a filter expression, you can use
instead of defining the filter expression in each Filter.
Figure 36.26. Filter Component Configured by Graph Parameter
CTL2 expressions can be used as a parameter value, see Parameters with CTL Expressions (Dynamic Parameters).
If you use parameters in CTL, you should get their value via
Be careful when working with them, you can also use escape
sequences for specifying some characters.