Reply To: Creating a Filtered GA4 Custom Report for Multiple Event Names

[Lincoln]

Looks like you’ve bumped into GA4’s character limit for regular expressions, which tops off at 256 characters. If your expression runs over this, it’s likely the culprit behind why you’re seeing less events come through than expected.

But don’t worry, there’re a few workarounds to this. One method is to use Looker Studio where you can handle your data filtering. If Looker isn’t an option, you could also consider importing the data to a spreadsheet tool like Excel or Google Sheets. From there, you can manage your computations in a more unrestricted environment.

Hope this helps and best of luck with your custom reporting!