Workflow, make this lead parent of a custom entity

[Russ]

Omg, I never used ";" at the end, that was the issue. Sorry.

[Russ]

Hi!
trying to create a new record with a parent, lead, that triggers the workflow..

I assume the only way of achieving that is to use a formula (since GUI selector does not allows you to select a parent)

So the formula is not working, i tried many options:
(result -> shows lead as a parent type selector)
parentType='Lead',
parentName=lead.firstName,
parentId=leadId

please kindly help and guide me, thanks a lot