ENTER key getting commad as BACK

Hi Experts, Good Day.

I have developed an ITS for RFT. In that, when I am executing the transaction in SAP (as module-pool transaction) everything is working fine. But the same transaction when I am trying to execute in a browser the ENTER key leading the transaction to previous screen instead going forward (to next screen). When I tried to check in the debugging with static break-point in the screen there I found that for ENTER key I am getting the SY-UCOMM as BACK so it is leading to previous screen (as logic I have written for BACK).

So experts, can you guys please suggest me what could be the problem and how to over come this.

Thank you,

-Vijay