Hey Guys, im trying to get a little help here 
I want to add a serial number, to the end of all these strings.
I want it to start over for each sublist. Anyone have an idea for this?
Try using list levels on your String.Insert node. Also i would recommend using an List.Count node instead of a code block as index.
Hey Daan, thx for the reply, can you elaborate this?
Hey i think i misunderstood you the first time but i am trying to create a working script at the moment.
Could you maybe share your Dyn, and possible, corresponding files on the forum?
Is this what you are looking for @Phh
Hey Daan, no its not. That is the result i already have…
Sublist 1: dddd.1
dddd.2
dddd.3
Sublist 2: dddd.1
dddd.2
dddd.3
Something like this
Two options, one with OOTB nodes and the other DesignScript. The advantage of the DesignScript is that the serial gets added to the end of the string (rather than at a specific index). The OOTB node version could use String.Length to work out the index at which to place the serial.
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Thomas, can you tell my why, i dont have the level control on my List.Count?
@Phh what version of Dynamo are you running?
The levels will only appear if you check the Use Levels radio box, accessed through the forward arrow:
Its up to date… I figured it out Thx so much