Trigger pipeline from different GITLAB group

Hi,

I have a question on triggering a pipeline in different gitlab group. Below is the example.

Pipeline “PIPE-A” in in gitlab group “GRP-A” is using custom CI/CD variables and working fine.

Pipeline “PIPE-B” in in gitlab group “GRP-B” wants to trigger “PIPE-A” and it is failing, because the custom CI/CD variables set on “PIPE-A” are empty now.

What are the options to still leverage the custom CI/CD variables set on “PIPE-A”, even when triggered by “PIPE-B”?