How to send parameters with LIKE condition in URL

Hello Guys,

I'm facing a problem that i couldn't find solution yet on the internet.

Basically i need to search for username or name in URL.

At the moment i can just find for exactly username or name.

Ej:

http://server/XMII/Illuminator?service=admin&mode=UserAttribList&Group=laconceicao&Content-Type=text/xml

In this case i have the complete login "laconceicao", but i need to search if i just have some of the letters, like below.

http://server/XMII/Illuminator?service=admin&mode=UserAttribList&Group=%lacon%&Content-Type=text/xml

but like this /\ does not work,

Ej of return:

Anyone could help me?

Thanks.