Fix broken filtering through discriminator

main.go

@@ -232,6 +232,7 @@ type MongoStartProps struct {
 	MongoPass string
 	MongoDebugQuery bool
 	MongoDBPrefix string
+	AllowTruncatingDoubles bool
 }
 
 func Start(props *MongoStartProps) error {
@@ -262,7 +263,10 @@ func Start(props *MongoStartProps) error {
 			NilSliceAsEmpty:   true,
         	NilMapAsEmpty:     true,
 		}).
-		SetRegistry(GetCustomRegistry())
+		SetRegistry(GetCustomRegistry()).
+		SetBSONOptions(&options.BSONOptions{
+			AllowTruncatingDoubles: props.AllowTruncatingDoubles,
+		})
 
 	client.DebugQuery = props.MongoDebugQuery
 	if client.DebugQuery {