Well you can't do all properties, but you can still select an object with a named variable.
Object Compare Value
Compare Two Values( <object.property> = <value> )
That will select the object.
Compare two values does not do any picking, says so in the tooltip even :)
And to original poster: Like said before, you can do that by comparing a single property. If you have variable name, doing 'Object compare instance variable name = Bob' would pick all objects that are named Bob.