URL Query String Parameter is not getting value



I'm trying to get the s_cid value on the url, but my global page load rule always return the default value.

In the past we've always used custom scripts with s.getQueryParam("s_cid"); but now with Launch offering this feature, I would like use built in feature. I'm getting all the other values that I set in the same global page load rules.

Can you help me? Do I need any additional plugin?

url:   https://calendar.google.com/calendar/r?s_cid=wpi

data element

Screen Shot 2018-09-26 at 10.00.53 PM.png

page load rule

Screen Shot 2018-09-26 at 10.01.31 PM.png