@jayjay You need to wrap wait for css into ignore error action and only then process [[WAS_ERROR]] variable
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Check ignore error documentation inside BAS:
0_1528304878313_IngoreError.png
Where can I find the "For each element" option when I click on a element ? Usually after clicking that option I would hit the "start loop" option for scraping a website. I'm watching a tutorial but I guess the version I'm using is newer. 
@asmithy245 I think that for each element & start the loop are the same things that you talk about.