Isuue in VRM set values

Hi,

I need to show a drop down for 11 list values in selection screen. So i used VRM_SET_VALUES fm. i did code like below:

CLEAR wa_values.

   wa_values-key = '1'.

   wa_values-text = text-008.

APPEND wa_values TO i_values.

till KEY = 11...

CLEAR wa_values.

   wa_values-key = '11'.

   wa_values-text = text-018.

APPEND wa_values TO i_values.

   lv_id = 'P_REASON'.

   CALL FUNCTION 'VRM_SET_VALUES'

     EXPORTING

       id     = lv_id

       values = i_values.

Now values are coming but when I choose the 10 list value or 11 value and press enter then drop down field automatically set to the first list value.

I also change all the keys with some other 2 digits or same as text but nothing working. Please give ypur valuable comments to soort out the issue.

Thanks in advance.