I want to configure RMAN batch script in my windows server

@echo

I want to Schedule RMAN batch script to take level 0 incremental weekly and level 1 backup daily with retention period of 20 Days

I want to know RMAN commads to be placed in .cmd file or txt file and from batch script i am trying to call my cmd file. From my batch script it is connecting to RMAN but backup has not started

backup_weekly_db1.txt

RMAN>run{

Backup incremental level=0  tag='Weekly_Full_database' filesperset 10 format "C:\APP\ADMIN\FAST_RECOVERY_AREA\

VERYFLOW\BACKUPSET\Weekly_%T_L0_%d-%s_%p.db" database;

}

backup_weekly_db1.bat

@echo off

SET ORACLE_SID=VERYFLOW