diff --git a/models/workflow/workflow.go b/models/workflow/workflow.go
index 6369be1..23ea046 100644
--- a/models/workflow/workflow.go
+++ b/models/workflow/workflow.go
@@ -200,7 +200,7 @@ func (d *Workflow) ExtractFromPlantUML(plantUML multipart.File, request *tools.A
 func (d *Workflow) generateResource(datas []resources.ResourceInterface, request *tools.APIRequest) error {
 	for _, d := range datas {
 		access := d.GetAccessor(request)
-		if _, _, err := access.LoadOne(d.GetID()); err != nil {
+		if _, _, err := access.LoadOne(d.GetID()); err == nil {
 			continue
 		}
 		_, _, err := access.StoreOne(d)