Insert list2 into list1 with different number of columns

Can anyone help?
The list gList1 contains only one column.
The list gList2 contains 2 columns and has only one line header.
I'm trying to insert rows from gList1 into gList2, where the second column of gList2 will always have a value of 0.
I can't do it.


Thank you very much !


Please, can you still look at these blocks for me?
In a two-dimensional list, I want to update the item with index 2 if the condition...
I guess I'm referring to it wrong...

It works !
Big thanks!

Don't use the text length block where you should use the length of list block