How to set Multi-select value iteratively

[Margots Kapacs]

Hi,

I have a number of days X and I would like to set multi-select field to array of  values  M = {1, 2, ..., X}. I am having difficulty to do so which may be due to fact i don't know exactly how loops are set up in Jira automations. 

I am able to have one value X updated but I can't seem to figure out how to trigger a loop to update field with the rest of the values of the array M. So far:

Here it gets days of stay, the number X value

And then i like to edit multi-select issue field to add values from 1, 2,...X

This works for one value X, however. How to make this into loop from 0 - X to update multi-select field for the rest of values of array M. Or maybe there is better way to set multi-select values automatically. 

Thank you for any help