score text json not visible on signs

Im working on a map while during the update from 1.9.2 to 1.9.4 I noticed something,

I have signs that tell what time it is, it shows the Day, Minute and Second

I do this by setting the score of a armorstand onto a none existing player called CLOCK,

then I display with the command below the scores onto the signs, but the scores themselfs don't pop up, just the " : ", will be displayed

execute @e[name=CLOCK,type=ArmorStand] ~ ~ ~ blockdata ~ ~ ~ {Text1:"[\"\"]",Text2:"[\"\",{\"score\":{\"name\":\"CLOCK\",\"objective\":\"D\"}},{\"text\":\" : \"},{\"score\":{\"name\":\"CLOCK\",\"objective\":\"M\"}},{\"text\":\" : \"},{\"score\":{\"name\":\"CLOCK\",\"objective\":\"S\"}}]"}