Oracle - Cursor en Oracle, Ocupar Variable en Campo

DECLARE

     tabla_1 VARCHAR2(100);

     CURSOR TABLA_IND IS

     SELECT   ID ,

                      NOMBRE_TABLA_GENERADA AS TBL,

                     CAMPO_SEMAFORICO ,

                     MIN_VERDE

     FROM INDICADORES_PRUEBA

     WHERE NOMBRE_TABLA_GENERADA = 'TBLARO149_LMSOLPAGPNDT';

     TABLA_IND_rec TABLA_IND%ROWTYPE;

     BEGIN

        FOR TABLA_IND_rec IN TABLA_IND

            LOOP

                tabla_1 := TABLA_IND_rec.TBL;

                UPDATE SCORE_IND

                SET      CASOS_ALTO  =  (SELECT COUNT(1)

                      FROM TABLA_IND_rec.TBL

                      WHERE TABLA_IND_rec.CAMPO_SEMAFORICO  > TABLA_IND_rec.MIN_VERDE

                                                              )

                WHERE TBL_ASOCIADA = TABLA_IND_rec.TBL;

            END LOOP;

        COMMIT;

     END;