[rules-users] simple Doubt..usage of modify

[abhinay_agarwal]

what is the difference if I use : 

rule "rule1"
     when
           $song : Song()
    then
        modify($song)
        {
            setName(index.getAndIncrement()+"_"+$song.getName());
        }
end


and if i use :


rule "rule1"
     when
           $song : Song()
    then
           $song.setName(index.getAndIncrement()+"_"+$song.getName());
end


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