a spotify ID, but i found the problem.
when i sent it to a testserver i noticed that it had dropped ALL the brackets :P So i changed stuff around a bit.

Code:
var %tracks = $+($chr(123) "tracks": [{ "uri": " $+ %delsong $+ " }] $chr(125))


now it looks like that, don't know why it works, but it does. Thanks though laugh