Code (ABAP) for the Customer Exit Variable (CMOD)

Question

Scenario
An employee can purchase any no of policies in a day or month.each policy will have start date and expiry date.
My requirment
Count all the policies(valid) by employee on a ranges basis exception reporting
(0-10;10-20;20-30;30-40) and then able to drill down by policy start date and expiry date.
As per the requirment is to show policies that employee had with in the give date intreval  which are not yet expired (active) i need to write a condition that will count only policies whose Expiry date is > Current calender day
As Policy Expiry Date is a char i am converting it to KF using fourmala variable so that i can write a condition on it using current cal day formula variable sap exit
Requirment:
Need a code for SAP exit variable which will meet the following requirment
There are the following 2 variables in the query
1) A variable (User Input)(Date Range) on Policy Start Date and
2) Authorisation Variable which is based on Authorisation Object(Analysis Authorisations)
I need a SAP Exit variable (CMOD) that will
BAsed on the user entered Policy Start date it has to pick all the policy exiry date of the policies and display all the policies whose expiry date is greate than Sy Date (Current Date) and also if Policy Expiry Date is blank or # it has to display
Arun supplied me with the below code...but i think it doesn't include blank expiry date or #...as i am new to ABAP please update me with releavent code
Policy Start Date : ZPST_DTE
Policy Expiry Date: ZPSP_DTE
Variable (Type:Customer Exit) on Expiry Date: ZEEXP_DTE
Arun's Code:
IF I_STEP = 1.
CASE V_NAME
WHEN 'X' " X is the variable u created for the exit
l_s_range-low = SY-DATUM.
l_s_range-opt = 'I'.
l_s_range-sign = 'GT'.
APPEND l_s_range TO e_t_range.
END CASE.
Please modify above code to include Blank or # values of Expiry Date
Thanks Arun
Please ask if you need further info as this is urgent
Thanks

Answer 1

Hi Arun,
Thanks for the help...will definetly assign points
(Closed the previous thread)
Please spare bit of ur time as this is my first ABAP Code
Can i include 2 restrictions..# and Variable (Customer Exit)...But how can i include Records with Blank Values
As the data from Source system the expiry date is filled up with either Date or # or Blank...my requiorment is to include all 3 and
Question:
As there are 2 other variables defined ..one on Policy Start Date (User input date intreval) and Location (Authorization Variable..Analysis Authorisations)...Do i need to change I_STEP in the code
(Req: Reports shows all the(still valid) policies emp has purchased between  2 give date (Variable on Policy Start date)
IF I_STEP = 1.
CASE V_NAME
WHEN 'X' " X is the variable u created for the exit
l_s_range-low = SY-DATUM.
l_s_range-opt = 'I'.
l_s_range-sign = 'GT'.
APPEND l_s_range TO e_t_range.
END CASE.