Hello!
I want remplace the null items from list on the left with items from the other list.
How can i do that?
Thank you for your help!
Try component Combine Data.
If that does not work attach your grasshopper definition so we can work with it. Imagine telling a plumber to virtually repair your water pipes using an image instead of working on the physical pipes. 
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Hello, I found the solution: I have to use the dispatch node, select the items to be inserted and then insert them into the list with the node “replace nulls”.
I’d happily share my spaghetti dish, but it’s a little too messy at the moment. 
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