Change the index of getslice with a bang

hello dear vvvvers,

im sorry to bother you with my newb questions but its urgent.

i have three diffrent lists of strings, all containing short video files,

the getslice node controlls the output, now i want to switch to the next video

by changing the index pin of the getslice with a simple bang

so each time I bang +1 should be added, but i dont know how to acomplish that.

have this: counter (Animation)

haha, that was easy

thank you very much

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