How to configure custom datasource properties using websphere application server console like currentSQLID

Open WebSphere application server console, from server tab right click on the server and choose Administration->Run Administrative console

Then on the left hand side menu go to resources section and pick Data Sources

Click on the datasource you need to add/change properties

Then follow the below path

{DATA_SOURCE} -> custom properties 

Now you can pick the properties you want to change/add.