hi guys,
Just a bit of my two cent’s worth. I think it might be the first list being the issue here. You have to resolve the null values that are appearing so… Designscipt-wise, you can type this in to get the values to be either true or false.
input==null?false:true;
Then push that through your if formula.
If I got it wrong, then hope these would help you as much as it has helped me out when I first started my journey in Dynamo.