JQL Queries with testExecutionTests return empty results

Hello Xray support Team,
I have couple of questions regarding JQL queries which i wanted to clarify:

1) How to create a query which takes all tests with status x from a filter of Test Executions (i tried several different queries but i assume it should look mostly like: project = CP AND issuetype = Test AND issue in testExecutionTests("[CWF Planning] All test execution, Fix Version = 1.1 Pilot", ABORTED)) (where "[CWF.... is my saved filter containing group of test execution)

2) Since X-ray 1.9.0 it`s available to assign test case execution instance (in Test Execution object) to a person. Is it possible to create a query to filter "all TC to be executed, assigned to <current_user>"