Combine sublist in list

Greetings!

How can i combine several sublist in a list without using the exploding tree?

The number of lists depends, so I need to regulate it. Is it possible?

Thank you!

Best regards,
Tobias

Right click on parameter and do Flatten.

Based on the image, I am guess your data structure is a set of 3 branches with the same length.
If you want to add them all together:
flip matrix then mass addition.
image
The flip matrix will do something similar to the explode in that it flips the branch item index.
The mass addition then adds everything that is now on the same branch.
If you have an example file, uploading it would help us understand what you mean by regulate it.

Thank you @christopher.ho! This is what i needed.