Value of field record is not a GlideRecord

Bird1
Mega Sage

I am creating an event to remind pending approval of Legal Request ticket and would like to Add Worknote. 

The flow can run smoothly except the Add Worknote, show error as below. Not sure how to fix?

Remark: The flow is triggered by sysapproval_approver table.

And I used approval record > approval for > number to route to ticket record.

 

find_real_file.png

find_real_file.png