Fix issue #2740

src/blenderbim/blenderbim/bim/module/sequence/data.py

@@ -251,10 +251,11 @@ class WorkPlansData:
 
     @classmethod
     def active_work_plan_schedules(cls):
-        if not self.props.active_work_plan_id:
+        results = []
+        if not bpy.context.scene.BIMWorkPlanProperties.active_work_plan_id:
             return []
-        for rel in tool.Ifc.get().by_id(self.props.active_work_plan_id).IsDecomposedBy:
+        for rel in tool.Ifc.get().by_id(bpy.context.scene.BIMWorkPlanProperties.active_work_plan_id).IsDecomposedBy:
-            for related_object in rel.RelatedObjects:
+            for work_schedule in rel.RelatedObjects:
                 results.append({"id": work_schedule.id(), "name": work_schedule.Name or "Unnamed"})
         return results
 

src/blenderbim/blenderbim/bim/module/sequence/operator.py

@@ -84,13 +84,13 @@ class DisableEditingWorkPlan(bpy.types.Operator, tool.Ifc.Operator):
         core.disable_editing_work_plan(tool.Sequence)
 
 
-class EnableEditingWorkPlanSchedules(bpy.types.Operator):
+class EnableEditingWorkPlanSchedules(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.enable_editing_work_plan_schedules"
     bl_label = "Enable Editing Work Plan Schedules"
     bl_options = {"REGISTER", "UNDO"}
     work_plan: bpy.props.IntProperty()
 
-    def execute(self, context):
+    def _execute(self, context):
         core.enable_editing_work_plan_schedules(tool.Sequence, work_plan=tool.Ifc.get().by_id(self.work_plan))
         return {"FINISHED"}