Whoogle: How can I use the preferences URL?

Hello,

I would like to use the URL of Whoogle's settings so that I can use different settings.

How can I save and use the settings via the URL?

https//tst.us?preferences=uG8MBIJwHdiwDp1QdzDg92Jvu-uXf9XXc4pizSjScK0YUIsWiEyA-\_U3hz5hFvMYUeiUWWOdbNNUzMuFyMZNVFye-vhkKn2L\_sXt5XNyOvkpjwBhPP2MsakXYPsw227zq00CMwioW33qsIsoNbTFDCw9VkCLrGLHxYCq3D9ZtT53ho0glFtjopDko5ucuPeYJU7QbyQWbNAT0xxeTqiXDLneMMDXCiexiWcjc0B4F4msP7JwS605uJuHFJHCHwcDQCa6VHw==

(tst.us does not exist, it is a sample.

Unfortunately, it has no effect on the settings if I use this URL for the search.