You can use "Result" variables that are predefined in BAS. There are 9 of them.
If you need more you can use filesystem actions and create TXT or CSV files
to store any number you need. Similar to that you can use database for such
tasks too.
How to Array variable.
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@seven7 You will have to use javascript and the "execute code" action
https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/Basics -

Unfortunately, I don't know how to do it, as shown in the figure, each time the loop variable [[IMAGES_URL]] gets a different URL result.
I want to store these results in a variable like [[RESULTS_IMAGES]] value is https://url1.com,https://url2.com,https://url3.com