HR ABAP query

Hi Experts,

I am developing HR report.

requirement:

There are two options on the selection screen

1) using personnel no: if the first option i.e. get the personnel no selected and entered the personnel no the report is giving the correct optput in SAp-Script

2) using last name and first name : if report run using the second option i.e. last name, report is not giving the correct output.

it is not selecting the values if give last name as 'p*'.

how do i do that ??? if i entered the value 'p*' as last name.

any sample code???