[Flutter] how to get values from map based on condition in flutter dart?

Using map.entries property i want to fetch all values those are even in a map data,

I have any other solutions to get this output but i want it to solve it with map.entries property...

its return null when value is not even

output should be [2,4] instead of [null,2,null,4]

void main() {
final myMap={
'first':1,
'second':2,
'three':3,
'four':4,
};

List<dynamic> list=[];

list=myMap.entries.map((e) {
if(e.value%2==0)
return e.value;

}).toList();
print(list);



}

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