xgui damagelog

Hello, I would like to add a button to the xgui part of ulx admin mod. I would like to have a “DamageLog” button that when pressed prints the damage log (ttt_print_damagelog). Can someone tell me how to add the gui and the command to the button?

[editline]28th November 2012[/editline]

Here is what I have:

function ulx.damagelog (calling ??)

??

local damagelog = ulx.command ( CATEGORY_NAME, “ulx_damagelog”, ulx.damagelog )
damagelog:defaultAccess ( ULib.ACCESS_ADMIN )
damagelog:help (Prints damage log of round)

I put question marks where I don’t know what to put.
All help is appreciated.