Error to insert in firebird

["Ismael L. Donis Garcia" <ismael@xxxxxxxxxxxxxx>]

I am trying to execute the following consultation but he does not execute me well. Which will be able to be the problem?

$sql = "insert into scele (codigo, nombre) values (?, ?)";
$param = "1, Test1";

$tr = ibase_trans(IBASE_WRITE,$this->cn);
$qr = ibase_prepare($tr,$param);
$this->rs = ibase_execute($sql,$param);
if ($this->rs){
  //Evaluate this condition, but he does not enter here 
}

Best Regards
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| ISMAEL |
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