When trying to insert this problem generates me. Use of the undefined constant `SEQUENCE_ID_PROBLEMA` - assumed `SECUENCIA_ID_PROBLEMA`

I do not know where the problem is, please help.

My Oracle sequence:

```
<code>
CREATE SEQUENCE INFORMACION.SECUENCIA_ID_PROBLEMA
 START WITH 0
 MAXVALUE 9999999999999999999999999999
 MINVALUE 0
 NOCYCLE
 NOCACHE
 NOORDER;
</code>

```

My code in PHP:

```
<code>
$sql = "INSERT INTO $tabla (ID_PROBLEMA, HORA_INICIO, PROBLEMA, CAUSA, 
      SOLUCION, HORA_FIN, ID_ASIGNACION) VALUES (?, ?, ?, ?, ?, ?, ?)"; 
$stmt = odbc_prepare($Conex, $sql); 
$success = odbc_execute($stmt,[SECUENCIA_ID_PROBLEMA.nextval,$HORA_INICIO,$PROBLEMA, $CAUSA,SOLUCION,sysdate, $ID_ASIGNACION] );
</code>

```