I have string: 1234567890
How can i make it look like: 12 34 56 78 90?
No i think it’s not right idea.
Maybe algorithm with loop will be much better for this work.
Well, I’m assuming you are getting this string as a conversion from some other source that doesn’t allow spaces (otherwise, you could simply type “12 34 56 78 90” with the spaces in there yourself).
Would a format text node work for your uses? You could convert it from text back to string after you use it. WTF Is? Text- Format Text in Unreal Engine 4 - YouTube
9/10 there is a need to divide something into pieces, you’d use modulo:
There might exist a more elegant way but it’s late here… 
Following Everynone tip on the module:
(I used | instead of space, just for clarity)
Result:
12|34|56|78|90
Ah, I see, inserting is more logical here. That looks cleaner and neater!
Reverse loop.
But how?
I can’t figure out where the error is. INSERT seems to give +1 to the array and give an error.
What’s the different?Just to understand.
Reverse loop: last to first
Normal loop: first to last.