how to change the title of the forum

[hotcomputers]

hello

I am new user of vbulletin and i need some information.
I want to change the name of my forum
I have tried on vBulletin option > Site Name / URL / Contact Details

and i have changed the "Forum Name"

But when i look on the page i see that nothing is changed
it looks the same:

My forum - Powered by vBulletin

How can i delete the " powered by vBulletin"

Thanks

[techmirr]

Go to AdminCP > Language & Phrases > Search in Phrases, search for the variable x_powered_by_vbulletin, and edit as desired.