How to get process variables from execution

I want to get following process variables and attributes from execution:

userAccountid
conversationid
sendinguserid
receivinguserid

Previously, i am using edoras attributes in the process bpmn but no way to use edoras after i upgrade the flowable designer. So I have to get these attributes and variables from DelegateExecution.

Not much context, so I need to guess:

These ar ethe docs on how to get / set process variables from / for executions.

Does this help?