How can I compare a dynamic variable with a literal in Mathematica?

I'm doing a Mathematica Notebook and I want to make an alarm clock. Something like this:

SetAttributes[Horas, HoldRest] 


(* Get System Hour *)
Hours = Dynamic[Refresh[DateList[][[4]], UpdateInterval -> 1]];  

SetAttributes[Mins, HoldRest] 

(* Get System Mins *)
Mins = Dynamic[Refresh[DateList[][[5]], UpdateInterval -> 1]]; 

If[

  SameQ[ToString[Hours], ToString[alarmh]] 
    && SameQ[ToString[Mins],ToString[alarmm]],   
  Quiet@EmitSound[Sound[SoundNote["D", 1,"Tinklebell"]]]
];

alarmm and alarmh are variables that the user select from a listbox When the variables from the listbox are the same with the system hour I want to sound a bell.

The problem is that if I make Dynamic variable I can't compare them, but if I do this:

Refresh[DateList[][[5]], UpdateInterval -> 1];

I can compare between them, but the time doesn't update...

How can I make it update?

Comments

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