A screenshot of what you mean ? And what is the type of variable you're trying to watch ? Objects are complex and thus watching one will return a complex structure compromised not only of the value of the instance variable you want, but of all its instance variables.
In any case, when you collapse the objects in the debugger, it should give you some idea of the values (for an NSString, it should show you the actual string, for an NSDictionary, the number of key/pairs, for an NSArray, the number of elements in it).