How can I search automatically for values and variables in Firebug/Script/Watch?

I'm looking at an extensive webapp and I want to find a particular object. I set a breakpoint to inspect available variables and I have some educated guesses as to what property values are defined by 开发者_运维百科the object or what kind of selfdocumented variable names could have been used for the object. Instead of tediously/manually searching the tree structure in the Script/Watch tab, is there an automated search feature by which I can search for all variables and values that are available to me at the current scope?

Feature doesn't exist in Firebug.