...
and the following Mapping
Searching issues blocked by linked issues in a state not equal to Done
The JQL function issue in hqlLinkedIssuesOf("status!=done", "Blocks", "O") will research all issues blocked by one/more issue/s not having status equal to done.
Searching issues in a state not equal to Done, blocking linked issues having priority High
The JQL function issue in hqlLinkedIssuesOf("priority= High", "Blocks", "I") and status != Done will research all issues not having status equal to Done, blocking issues having priority equal to High.