How we can find workflow assign user UserID through X++ code

AX 2012 R3

Please Be aware i want user id whose which are mention during workflow designing …

WorkflowTrackingStatusTable ,WorkflowTrackingTable ,WorkflowTrackingCommentTable etc…
By using these table we track normallly Asign user UserID but in these table data enter after workflow submission process, I want user id before workflow submission process…