Dynamic action problem

Hi all

I am trying to write one dynamic action. Scenario is as folloes:

If action type C4 is run , Payroll area is "XX", Molga is "40"  (please note that we have already run one action before this action and infotype 41 is updated with stert date)

then Infotype 19 should be updated in background . Task date should be 15 months from startdate with company.

What i tried to do  is

0000       06 409 C *--REDESIGNATION----

0000       06 410 P T001P-MOLGA='40'

0000       06 411 P P0001-ABKRS='40'

0000       06 412 P P0000-MASSN='C4'

0000       06 414 I INS,0019,G2/D

0000       06 415 W P0019-TMART='G2'

0000       06 416 W P0019-TERMN=P0041-DAT01

0000       06 417 W P0019-VTROP='+'

0000       06 418 W P0019-VTRAN='15'

0000       06 419 W P0019-VTRZH='012'

Issue is my start date is 05.03.2014 and the task date should be updated as 05.03.2014+ 15months . but its reflecting 00.03.0001.

Please help.

Thanks

Seema