Adding "/" as part of building dynamic URL

Hi,

I’m trying to build a dynamic URL that consists of the following for example:

**url: “https://google.com/?**AppId={{ value }}&PID={{_filters[‘postback_installs_ios_android.media_source’] | url_encode }}”

url: "https://google.com/? - this line is constant.

I need to add “/” between

AppId={{ value }}"/"&PID={{_filters[‘p_installs’] | url_encode }}"

basically, I need the following :

https://google.com/test**/**12345

Any suggestions?

Thanks in advance.