diff --git a/src/diagrams/flowchart/flowDb.js b/src/diagrams/flowchart/flowDb.js
index 3ba55c8dd..346b99d0b 100644
--- a/src/diagrams/flowchart/flowDb.js
+++ b/src/diagrams/flowchart/flowDb.js
@@ -49,8 +49,9 @@ export const lookUpDomId = function (id) {
  * @param type
  * @param style
  * @param classes
+ * @param props
  */
-export const addVertex = function (_id, text, type, style, classes, dir) {
+export const addVertex = function (_id, text, type, style, classes, dir, props = {}) {
   let txt;
   let id = _id;
   if (typeof id === 'undefined') {
@@ -106,6 +107,7 @@ export const addVertex = function (_id, text, type, style, classes, dir) {
   if (typeof dir !== 'undefined') {
     vertices[id].dir = dir;
   }
+  vertices[id].props = props
 };
 
 /**