can't read "d": no such variable
    while executing
"return $d"
    (procedure "hexToDecimal" line 3)
    invoked from within
"hexToDecimal [lindex $raw_timer [expr 2 * $event + 1 ]]"
    (procedure "readTimer" line 13)
    invoked from within
"readTimer $day"
    (procedure "readTimers" line 5)
    invoked from within
"readTimers"
    (procedure "init" line 14)
    invoked from within
"init $INIT(timer)"
    ("^timers$" arm line 2)
    invoked from within
"switch -regexp $c {
    ^sync$ {
      init $INIT(mode)
    }
    ^comforteco.* {
      checkArgs $c 2 "comforteco" {^comforteco [0-9]{1,2}\.?[05]? [0..."
    (procedure "doCommand" line 10)
    invoked from within
"doCommand"
    (file "/opt/iobroker/node_modules/iobroker.eq3-thermostat/eq3.exp" line 1265)