Firefox add-on for UiPath is not visible in trail version of UiPath studio

Can somebody suggest how do I install UiPath Add-on on Firefox.
By default, I don’t find this extension in trail version of UiPath Studio.
Any help is appreciated.

I figured-out whats the problem is.
I had older version of UiPath so the Firefox add-on’s are not available. After updating the UiPath studio I was able to view and install the Firefox add-on’s.