SCCR_LOCK_CLIENT locking client

Hi,

I need to lock client using a background program.

So I decide to use F.M. SCCR_LOCK_CLIENT called in a abap report.

It works, infact users aren't able to connect when they use sapgui, but when they use html-gui, they are able to connect, bypassing the client locked state.

Can somebody help me?

Thanks.

Mario