Problem in Creating Customer Exit in CMOD

Hi,

I want to Create Few Global Variables for my Reports.

I have created Like This

1) Used T code <b>CMOD</b> to go Project Management of SAP Enhancements

I created a Project Name <b>ZDAL</b> it asked for the Package I have given <b>$TEMP </b> as package Name

2) In Enhancement Assignment I have choosen <b>RSR00001</b>

I am Using ECC5.0 & BW 3.5 In My Project

3) I selected Components and i double Clicked on Function Exit <b>EXIT_SAPLRRS0_001</b> Then I view all the Code of that Function Module.

Here One Include is there

If I want to Create any Variable I want to select This Include .

But When I double Click This Include <b>"ZXRSRU01"</b>

I get a Messege

<b>Message no. DS027</b>

<b>Program names ZX... are reserved for includes of exit function groups</b>

It is not allowing to go in that Include

Plese Let me Help to solve this Problem

Thanks

Priya