Set up of dependency between multiple drop-downs and one textfield.

Hi,

I would like to set up the following:

     1. Let´s say I have 3 drop-down lists of which "other" is one of the values

     2. If "other" is selected for drop-down 1, 2, or 3 I would like to see a textfield becoming mandatory

I know I have to put in the following formula in "dependent" for the textfield to make it work for one drop-down:

          isInList($dropdown1,createList("Other"))

But is there also a chance to extent this formula so that I don´t need to create three textfields but can combine this in one.

That means no matter from which dropdown I choose "other" this one textfield becomes available.

Many thanks for your support!