Filter multiple values in rows of a column with one variable

ONE DATA Core
1

I want to filter a Column of a Table for certain Variables.
Lets say I want that Column A only contains values that are either “A” or “B” how can I do that using only one variable?

Solution:
Create a variable and give it the value: A,B
Use a Data Filter Processor that uses this variable and set the RELATIONAL OPERATOR to “IN”