Url query parameter does not work on "spaceToolsTabs"

I am trying to use the “custom” query parameter like in the example ( Context parameters )

But it looks like only works for “generalPages” modules and not for “spaceToolsTabs”.

Is there a restriction that works only for “generalPages” module ?

My example looks like
/wiki/plugins/atlassian-connect/space-tools-tab.action?key=1PAG&ac.testing=helloWord&addonKey=confluence-qc-read-and-understood-addon&moduleKey=rd-ack-test