Variable user extit using patern

Hello,

I've a issue with my variable. I want to select all the transaction ID without 'TD'.

I created a variable ZVAR_TRAN with the caracteristic below:

- Processing by: User exit

- Variable represent: Selection option

- Variable is optional

- Variable not ready for input

- No default value

In my user exit, my code is:

When 'ZVAR_TRAN'.

     Clear l_s_range.

     l_s_range-low = '*TD*'.

     l_s_range-opt = 'NP'.

     l_s_range-sign = 'I'.

     Append l_s_range to e_t_range.

Using RSRT to check my report, I've a error message:

Invalid filter on ZTRAN_ID

System error in program CL_RSR_REQUEST_LISTCALCULATION and APPEND_FAC_TO_SLICER...

Could you please help me o resolve this issue?

Best Regards

Rico