Zathan
It actually work, but you have to insert it inside a double quote. For example, if you want to set target to position 300, 300. You have to write "300,300", with quote and comma.
Also if you want to enter target angle, you would still need to enter it inside a double quote "90".
The reason for this is because C2 editor did not let me set different UI for target whenever user changed the tween target (position, angle, etc). If it is position, it will need two value, X and Y, but for angle it would need to accept single value. The only thing i could do then is to make it a string/text in double quote, and the tween will automatically sets the right target value from the text.
Because back then I thought create/initialize tween would not be used by most average user, I choosed to implement it like this, and if I change it now to accept two value, it will break so many people project that already use it for the last two years, they would have to fix so many things.
I know it is not convenient but there's not much i can do with it.