I can't seem to figure this out. I am wonder if it is possible to create a filter for a column, and then filter that column based on another cells value. So I have created a filter for A column which contains values of TEST1,TEST2. I then have a dropdown in C1 that have the values of First, Second.
Here is the formula I put on costume formula. It does not return any value. Also, I am not new to coding, so I don't know if this is right.