Need help in creating a calculated member that will show the count of Test that are part of the Xray Test Execution.
There is no need creating a calculated measure to get Xray Tests which are included in the Xray Test Execution. You may use Xray specific dimension Xray Test Execution and measure Xray Tests with Executions which return a count of tests scheduled, executed or currently in execution for each execution (see picture below).
Please see the documentation for more information on Xray specific measures and dimensions: https://docs.eazybi.com/eazybijira/data-import/data-from-jira-and-apps/xray-test-management
Zane / support@eazyBI.com