create new functionality in modx manager

what i want i will let u know. let's suppose i have a tabel with value's .. now i want that i want to create new link or page in manager.so at that i can get the listing of my record's from that table through php core query..! i hope u understand my point..

i have follow that page for create page in manager
http://rtfm.modx.com/display/revolution20/Custom+Manager+Pages+Tutorial

from that i can create the page in manager but i have get my output through that function's



Notice that we did NOT use print, or echo, or raw HTML in our PHP. If you use any of these, you'll find that the text floats to the top of the page; remember that a Custom Manager Page is really acting as a function, so it should return a value.

but as u know i can't do any coding in this page.. like php multiple query's etc etc .. so now can u plz tell me how can i run my php code in that page ..? i think we can also create the template for our page so we can do any type of coding in our manager page for this i have follow that page:-

http://rtfm.modx.com/display/revolution20/Custom+Manager+Pages+in+2.3


but this is for mod'x 2.3 and i m use 2.6 ..

can u plz tell me how can i run my php query code in my custom manger page ..? if it is not possible then can u plz tell me how can i manage with the template ..?

Thanx

Hy

i have seen your that add-on

http://modx.com/extras/package/easynewsletter

i want that type of functionally in my website.. but its for evo and i m useing mod'x revo.

can u help me ..?