How can I use While of Code Bblock

[lwr4026]

I don’t know how can I use While of Code Block
Please give me a sample code…

[Draxl_Andreas]

For and while loop

what am i missing here? i was learning from a video tutorial and i came up with this, [image] when i am trying the same, i’m getting an empty list, [image] thanks in advance; ps: kindly suggest where can i learn more of scripting in code blocks. thanks again.