Where I can find layer 'number'

[RobertPiatek]

Hi Everyone, 

I have a question, how can i get number of layer presented on screen. All of them are layers from Feature Service and I would like to kow this number to be able to configure widgets like Layer List with new layers added to map. 

Because newly added layers to the map will not appear in existing apps widgets. 

BR Robert  

[RickeyFight · Accepted solution]

@RobertPiatek 

Go to https://ago-assistant.esri.com/ and search for the map you are using. Then look at the json. It should have the layer numbers. 

[RobertPiatek]

Thank you very much! That's what I was looking for 😉