As Tomao has shown you, you had extra pointless brackets.
Curly brackets or braces are used to open and close an event, alias or comparison. A timer is a command.
These are reasons to use curly brackets.
on *:EVENT:{ command }
alias test { command }
if ($1 = blah) { command }
As you can see below, commands are one line and can be nested within brackets.
/command param1 param2 param3
$command(param1,param2,param3)
/timername <N> <N> /command param1 param2 param3
/timername <N> <N> $command(param1,param2,param3)