Logic Pro X Edit mapping parameters
When Show Advanced Tools is selected in the Advanced preferences pane, you can set the maximum and minimum range values and invert the range for the selected parameter mapping in the Parameter Mapping area of the Smart Control inspector. Each mapping can have its own values, including multiple mappings for the same screen control.
You can also scale input values using the parameter mapping graphs.
Edit mapping parameters for the selected screen control
Do any of the following:
To set the maximum (high) value for the mapped parameter: Drag the Range Max value slider.
To set the minimum (low) value for the mapped parameter: Drag the Range Min value slider.
To invert all values between the maximum and minimum value: Select the Invert Range checkbox.