How can I use the or function with Rule Engine node?

Hi everyone,

There are different values ​​in each row of the 3 columns in the table you see. I want to open a 4th column and bring these values ​​one under the other. I was able to do the first one using “Not” but it gets errors on other data. When I wanted to use “or”, I couldn’t succeed. NOT ($Tckn$ = “?”)=> $Tckn$ data comes with this code but NOT ($Tckn$ = “?”)=> $Tckn$ OR NOR NOT ($Vkn$ = “?”)=> $ $Vkn$ OR OT ($ID No$ = “?”)=> I can’t get $ID No$ results, how can I do it?