Not really sure what you want...
#1
(exit and c < ema(c,50));
or
#2
(exit and ref(c,-i)< ref(ema(c,50),-i)
or 
#3
(exit and valuewhen(Close< EMA(Close,50),close)); 
...I think you might mean #3
Walt
--- In amibroker@xxxxxxxxxxxxxxx, "Louis Préfontaine" 
<rockprog80@xxx> wrote:
>
> I give up...  Tried everything I could, but really I can't do it.
> 
> ( exit == 1  AND Close[i]< EMA (Close[i],50)  )
> 
> I want to a close that is lower than ema 50 close of [i].  That 
shouldn't be
> that complicated!  Grrr...!
> 
> If anyone can help.  Thanks,
> 
> Louis
>