You can create input ports that receive values for variables. You can also remove the ports that you create from variables.
Open the Data Processor transformation
Overview
view.
Click
Choose.
The Developer tool displays a list of variables and indicates which variables already have ports.
Select one or more variables.
The Developer tool creates a buffer input port for each variable that you select. You cannot modify the port.
To remove a port that you create from a variable, disable the selection from the variable list. When you disable the selection, the Developer tool removes the input port.