Function Module 'DATE_TO_PERIOD_CONVERT' for 0FISCPER

hello All,

I have a date field / infoobject ST_UP_DTE in the Transfer Rules of 2LIS_11_VAITM.

I want write a routine for 0FISCPER to get the data from this Date Field,

i have written code below ,

CALL FUNCTION 'DATE_TO_PERIOD_CONVERT'

EXPORTING

i_date = COMM_STRUCTURE-ST_UP_DTE

i_periv = COMM_STRUCTURE-fiscvarnt

IMPORTING

e_buper = RESULT+4(3).

But when I start data loading , the data is not loaded to infocube.

The request is Yellow all the time.

Please correct me if anything is wrong in this code.

regards ,

Amol K.