>This is exactly my point - I am trying to trace in the Debugger. As soon as I hit this line
>

>case b_sched.pref_lvl11 = 3  && true
>	   =MESSAGEBOX(b_sched.base_id)
>	   =MESSAGEBOX( seek(b_sched.base_id, 'csrTemp1', 'base_id'))
>	    
>	    if not seek(b_sched.base_id, 'csrTemp1', 'base_id')
>			lcReqOK = 'Booking requiring specific instructor base would be violated'
>        endif
>

>the cursor immediately goes to the endcase line. Why it doesn't even attempt to get me my messageboxes I added out of the desperation?
>
>I don't think the coverage will provide any more insights here. I even started to wonder if I understand how case works in VFP. I have a condition which is true. Why no code inside the case statement is executed?

Have you set watches or otherwise 1,000% confirmed all variables have the values you expect?

You could try adding an OTHERWISE clause to see if it gets hit, maybe what you think is .T. is not.