I am trying to add a filter where a custom object's "Assigned To" field is the current user. I have tried filtering to where contains the current user's last name ($User.LastName) but got this error:
Any direction on how/if this can be done is greatly appreciated.
Assuming the Assigned To is not the Owner of the record, I have created something similar in my org.
We have a lookup to User for Processor. I created a Formula Checkbox field where:
$User.Alias = ProdPtr__r.Alias
This Checkbox returns True if the current user's alias equals the alias of the lookup and allows me to filter a list view to show each processor's pipeline without having to create a separate list view for each of them.
If you substitute the Processor's Alias for your Assigned To's Alias, then this might work for you?