Updating block metadata

[nixi]

Another problem: When I do:

local meta = Player:GetWorld():GetBlockMeta(BlockX, BlockY, BlockZ)

and then send myself a message:

Player:SendMessage(meta)

It prints two lines. I only want one. What even is the other line?
When I send a HOOK_PLAYER_LEFT_CLICK hook to the function, it prints the meta id to the second line and when I send a HOOK_PLAYER_RIGHT_CLICK, it prints it on the first line...
The additional line is always 1.