I included Google Analytics (javascript) in my Outsystems website via de eSpace Javascript. Now I want to place the Analytics Key in my Site Properties so I can update it easily for every environment.
How can I use a Site Property in my Javascript?
As far as I know, you cannot use Site Properties in the eSpace JavaScript window. For that, you have to use an escaped expression on a web screen or web block to add your JavaScript code along with the use of Site Properties.
Since you want the same script on all the web screens, I suggest that you add this expression in the Footer web block, so that it will be automatically added to all the web screens you create.