Tranfering data from alv display to a transaction with table control.

Question

Hi all, 
I am having some problem transfering data from my alv display to a trasaction which needs to display some values in a table control base on criterias which I have selected from my alv report.
When selecting an entry in my alv report.
1. The program should check whether there is an entry in a z table(already created), if so it retrieves data fro the z table base on the selected criteria.
2.otherwise it search from the data from other tables and then saves it in the z table and display the values in the tc.
my program is as follows.
FORM button_click USING p_ucomm TYPE sy-ucomm
                        p_selfield TYPE slis_selfield.
  CASE p_ucomm.
    WHEN 'SALES'.
      READ TABLE gt_alvdisplay
      INDEX p_selfield-tabindex
      INTO gs_alvdisplay.
      SET PARAMETER ID:  *I dont know how to pass the para to the tc.....
      CALL TRANSACTION 'ztrans_test".
ENDFORM.          
Note: TC is already created and it retrieves data from the z table but am having prob just to pass the parameters.
Ill be very grateful to you all

Answer 1

Hello,
Yes you can create text field without using screen painter as follows:
PARAMETERS P1 TYPE CHAR12 MEMORY ID mid.
Here, this code will create text box with name P1 and parameter id "mid"
You can assign meaning text to p1 using menu link GO TO --> TEXT ELEMENTS --> SELECTION TEXTS.
So before call transaction which contains this field you can write below statement.
SET PARAMETER ID mid VALUE <value variable>.
* Here vlaue variable is the variable from which you want to pass value to parameter id mid.
Refer [SAP Help|http://help.sap.com/saphelp_nw70/helpdata/en/e7/deb237b9a9a968e10000009b38f8cf/frameset.htm] for more information.
Hope this helps!
Thanks,
Augustin.