Rule not working

Dear All,

I have put a simple check at the time of module booking...

Pre-requisite = true

and check --> RHIQ_SM-SM_OBJID = '50006331'

I want to book the only module whose object Id = 5000633,

But I am not able to book any module, even module (object Id = 5000633).

I just wanted to check this rule first then I will add more condition on it.

How to apply this rule...

Book only one module whose object Id = 5000633, then I will proceed further..

Thanks in Advance....