javascript - Mongoose doesn't seem to support the $max field update operator, any advice? -

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i'm trying make use of the $max update operator in node.js project using mongoose, think a) i'm either doing horribly wrong or b) mongoose doesn't support functionality. (using example):

var updategamescores = function(game, newscore, callback) {   models.scores.update({     gamename: game   }, {     $set: {       $max: {         highestscore: newscore       }     }   }, {     upsert: true   }, function(err) {     callback(err);   }); };

gives me following error:

mongoerror: dollar ($) prefixed field '$max' in '$max' not valid storage.

i couldn't find (or similar functionality) in mongoose docs, suggests mongoose doesn't support this. if indeed case, there alternative ways can achieve this** while minimizing number of database operations?

**: "update value of field specified value if specified value greater current value of field"

thanks in advance.

consider writing update expression 

{ $max: { highestscore: newscore } }

since $max operator implies $set.


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