Event/Target Entity Bug

When the player executes a command or press on a key binding, I get his coordonates and set them inside 3 NBT Tags. However, I don't know why, but when I do this, the 3 NBT tags has still 0.0 as value. I tried with the Source Entity, but evidently, it didn't work because there is not the dependencie. So, did I make something wrong or is it a bug?

I printed into the console the 3 NBT Tags (the first position) and, when I execute the command /camera start I had this.

32:16.18 [Server thread/INFO] [STDOUT/]: [goldorion.littlecamera.procedures.CameraCommandExecutedProcedure:executeProcedure:102 0.0 
32:16.18 [Server thread/INFO] [STDOUT/]: [goldorion.littlecamera.procedures.CameraCommandExecutedProcedure:executeProcedure:103 0.0 
32:16.18 [Server thread/INFO] [STDOUT/]: [goldorion.littlecamera.procedures.CameraCommandExecutedProcedure:executeProcedure:104 0.0

P-S: I used the same workspace than the new ticket I created.