Set Node can't get correct information with multiple item input

[kenseco]

Hi, All thanks for help in advance.

I try to let the Set Node 10 to combine the result of list item and also some data from previous node. I expect the groupId will fulfill like the first row. However, after first row, the groupId are all [undefined]. Why is that?

here is my workflow

Here is the output.

What I expect should be

Anyone has any idea why this happening?

Thanks and have a nice day~

[pemontto]

Have a look at this post the other day. The same issue Replicate value - #4 by pemontto

[kenseco]

@pemontto It works like a charm! lol thanks for the help!