Data is not saving in me21n in custom added fields

Hi Experts,

I have appended few fiels in the ESLL table for me21n enhancement for one extra tab with field, when i am entering the data, the data is not saving.

all(6)fields are quantity and currency fields.this i am doing in SRVDET enhancement.please help me how to write logic for saving data in which exit_saplmlsp_040 and 041.

thanks.