tellraw a player scoreboard

the new tellraw feature of tell's a player score is still not working very well.
the message didn't load the score on the right time, when i make a line of 4 comands, like this: (the player example score is 0)
1-

scoreboard players add player example 1

2-

tellraw @a {"text":"","extra":[{"score":{"name":"player","objective":"example"},"color":"white"}]}

3-

scoreboard players add player example 1

4-

tellraw @a {"text":"","extra":[{"score":{"name":"player","objective":"example"},"color":"white"}]}

if i activate all these commands instantly, and orderly (using a fill command, for example), the both tellraw messages will show the last scoreboard (2 in the example)

Here is another example, i create a concept that tells the player how many damage he dealt in the last attack, in hearts. sometimes works, and sometimes don't... Sorry for bad english