Filter two lists of values not equal to Null

[sparkyduke]

Hi all I’m quite new to dynamo and I’m sure its an easy thing to do.
Im trying to filter two lists potentially using a filter by bool masks.

I am attempting to get the result: Material 233244 In future any result that isn’t Null.

If someone could advise that would be amazing thank you.

[GavinCrump]

Try something like this…

In this case the lower list would be your material texture path, and the upper list your materials.

[sparkyduke]

Thanks the object Null Worked !!