USE SQLCMD mode in SQL Job step

Hi Folks. 1. I am gathering data into one central table from different server using SQLCMD mode in SSMS. 2. I need to schedule this in SQL job. so my first step is to capture Data , in SQL step I put step name, and in type I selected Operating system(CmdExec). But it is failing.So How to use SQLCMD mode in job step ?