how to set a program into backgroud job

hi experts,i want to set a program into backgroud job.

the original code like this:

...some statements...

PERFORM FRM_SEND_MAIL USING WA_YA_LX.

...some statements...

i want to set 'PERFORM FRM_SEND_MAIL USING WA_YA_LX.' into background job.

is that code like this?

CALL FUNCTION 'JOB_OPEN'

EXPORTING

JOBNAME = WA_TBTCJOB-JOBNAME

JOBCLASS = 'A'

IMPORTING

JOBCOUNT = WA_TBTCJOB-JOBCOUNT.

PERFORM FRM_SEND_MAIL USING WA_YA_LX.

CALL FUNCTION 'JOB_CLOSE'

EXPORTING

JOBCOUNT = WA_TBTCJOB-JOBCOUNT

JOBNAME = WA_TBTCJOB-JOBNAME

SDLSTRTDT = SY-DATUM

SDLSTRTTM = WA_TBTCJOB-SDLSTRTTM .

hunger for you advice,thanks a lot.