Tw3TriggerParam is the name of the list of event specific parameters returned by mvDesigner. The columns returned vary with the object triggering the event and the event triggered. Please see the mvDesigner documentation for information about each object.
If a user event parameter is specified for the event, the column name is ".puser".
Examples
call w3GetVal(puser, "w3TriggerParam.puser")
call w3GetVal(lilneno, "w3TriggerParam.plinenumber")