Hello James,
loop in a loop, not really a surprise - but I didn't know that it is called nested loops:-)
The Problem here:

- I have to use global variables that LoopEnd and LoopStart can exchange informations - at the Moment only one with a fixed Name is present
- I'm not sure what I should use for multiple ones (Maps, sets, or named ones)

- I'm not sure how the NE reacts to multiple timers? Is it neccesary?

Some experiments have to be done the next time.
And thank you for the example - I will try it in the evening!

Thank you
and
have a nice day

Karsten